Benjamin Erxleben

Lead Product Designer

Gaming

Startup

B2C SaaS

Zack.ai — the smart gaming assistant

Zack.ai —
the smart gaming assistant

Gaming

Startup

B2C SaaS

Zack.ai — the smart gaming assistant

My Role
My Role

Design Team Lead &
Senior Product Designer

Team Lead & Senior Product Designer

About the Client

Dojo Madness is a gaming startup harnessing big data to build tools & services that help players to master their favorite games.

Timeframe
Timeframe

1+ year
2018 — 2019

1+ year • 2018 — 2019

My Role

Team Lead & Senior Product Designer

About the Client

Cara Care develops a SaaS medical App to improve the quality of life for people with digestive issues like IBS, IBD and others.

Dojo Madness is a gaming startup harnessing big data to build tools & services that help players to master their favorite games.

Dojo Madness is a gaming startup harnessing big data to build tools & services that help players to master their favorite games.

Timeframe

1+ year • 2018 — 2019

Overview

&

Summary

Applied Services, Deliverables & Impact

Overview

&

Summary

Applied Services, Deliverables & Impact

Responsibilities

Responsibilities

Responsibilities

Responsibilities

Design Team Lead

Design Team Lead

Design Team Lead

Conducted job interviews, hired team members

Conducted job interviews, hired team members

Conducted job interviews, hired team members

Conducted job interviews, hired Designers

Resource development, mentoring & planning

Resource development, mentoring & planning

Resource development, mentoring & planning

Resource development, mentoring & planning

Organization, planning & process optimization

Organization, planning & process optimization

Organization, planning & process optimization

Organization, planning, process optimization

Stakeholder management & collaboration

Stakeholder management & collaboration

Stakeholder management & collaboration

Stakeholder management & collaboration

Management of external partners & contractors

Management of external partners & contractors

Management of external partners & contractors

Management of external partners & contractors

Senior Product Designer

Senior Product Designer

Senior Product Designer

Launched product from ideation to v1.1

End-to-end product design (various features)

Launched product from ideation to v1.1

End-to-end product design (various features)

End-to-end design process for web- & desktop app

End-to-end design process for web- & desktop app

End-to-end design process for web- & desktop app

End-to-end design process for web- & desktop app

Actively shaped product roadmap and feature set

Actively shaped product roadmap and feature set

Internal CI processing & integration

Actively shaped product roadmap and feature set

Creation & maintenance of Atom Design System

Creation & maintenance of Atom Design System

Creation & maintenance of Atom Design System

Creation & maintenance of Atom Design System

Support for marketing, sales & content via print, merchandise, web & motion design

Support for marketing, sales & content via print, merch, web & motion

Support for marketing, sales & content via print, merchandise, web & motion design

Support for marketing, sales & content via print, merchandise, web & motion design

Outcome

Outcome

Outcome

Outcome

+62

+62

+62

%

%

%

Session Time

3

3

3

X

X

X

Installs

+48

+48

+48

%

%

%

Daily Active Users

+48

+48

+48

%

%

%

DAU

Over the timespan of roughly a year, Zack.ai managed to go from the first ideation phase past MVP and beta testing to a regularly iterated live product loved by millions of users.

It not only continued with useful features where the company’s previous vertical products for specific esports games ended but also pulled the separate user groups together with a more holistic approach, maximizing usage time by covering all game-phases and a broad catalog of supported games.

Over the timespan of roughly a year, Zack.ai managed to go from the first ideation phase past MVP and beta testing to a regularly iterated live product loved by millions of users.

It not only continued with useful features where the company’s previous vertical products for specific esports games ended but also pulled the separate user groups together with a more holistic approach, maximizing usage time by covering all game-phases and a broad catalog of supported games.

Over the timespan of roughly a year, Zack.ai managed to go from the first ideation phase past MVP and beta testing to a regularly iterated live product loved by millions of users.

It not only continued with useful features where the company’s previous vertical products for specific esports games ended but also pulled the separate user groups together with a more holistic approach, maximizing usage time by covering all game-phases and a broad catalog of supported games.

Over the timespan of roughly a year, Zack.ai managed to go from the first ideation phase past MVP and beta testing to a regularly iterated live product loved by millions of users.

It not only continued with useful features where the company’s previous vertical products for specific esports games ended but also pulled the separate user groups together with a more holistic approach, maximizing usage time by covering all game-phases and a broad catalog of supported games.

Applied Services & Skills

IC & Team Lead

IC & Team Lead

Research, Concept & Ideation

Research, Concept & Ideation

Branding & CI

Branding & CI

Prototyping & Validation

Prototyping & Validation

Product Design

Product Design

Digital & Print Media Design

Digital & Print Media Design

Audit, Testing & QA

Audit, Testing & QA

Assessment

&

Approach

Identifying Problems & Opportunities

Assessment

&

Approach

Identifying Problems & Opportunities

Assessment

&

Approach

Identifying Problems & Opportunities

Assessment

&

Approach

Identifying Problems & Opportunities

Problem Statement

Problem Statement

After the Company had launched several successful vertical products covering the depths of top played competitive games at the time, it became clear that the effort to identify & create the next product in line was likely not profitable enough, despite the brand, design system & basic feature set from the existing products.

Since the freemium monetisation model of the existing verticals was doing well enough but was still only purchased by a small fraction of the separated user-groups, the need for a more holistic approach was clear — unifying the user-bases, maximising usage time & ditching the freemium model for a big-data approach.

After the Company had launched several successful vertical products covering the depths of top played competitive games at the time, it became clear that the effort to identify & create the next product in line was likely not profitable enough, despite the brand, design system & basic feature set from the existing products.

Since the freemium monetisation model of the existing verticals was doing well enough but was still only purchased by a small fraction of the separated user-groups, the need for a more holistic approach was clear — unifying the user-bases, maximising usage time & ditching the freemium model for a big-data approach.

Approach

Approach

In conclusion the goal was to not only cover a way wider catalog of supported games but also making sure the product covered as many needs around the process of gaming as possible in order to gather the maximum of users & data to analise, utilise and monetise later on.

Since this was a "companies first" without a clear indicator of profitability — a closely watched and iterated MVP & Beta approach was the option of choice.

In conclusion the goal was to not only cover a way wider catalog of supported games but also making sure the product covered as many needs around the process of gaming as possible in order to gather the maximum of users & data to analise, utilise and monetise later on.

Since this was a "companies first" without a clear indicator of profitability — a closely watched and iterated MVP & Beta approach was the option of choice.

Insights

&

Ideation

From separate Verticals to a unifying Approach

Insights

&

Ideation

informed Decisions towards Product Market Fit

Insights

&

Ideation

From separate Verticals to a unifying Approach

Insights

&

Ideation

From separate Verticals to a unifying Approach

The Facts

The Facts

Fortunately there were a lot of insights & learnings gathered over the previous years of vertical product coverage the team was able to benefit from:

Fortunately there were a lot of insights & learnings gathered over the previous years of vertical product coverage the team was able to benefit from:

detailed game data is the main driver for useful coaching features but is usually very rare to be accessible.

detailed game data is the main driver for useful coaching features but is usually very rare to be accessible.

detailed game data is the main driver for useful coaching features but is usually very rare to be accessible.

detailed game data is the main driver for useful coaching features but is usually very rare to be accessible.

in-game support is the most liked user-feature (but hardest to balance in terms of live data availability and "cheating" accusations)

in-game support is the most liked user-feature (but hardest to balance in terms of live data availability and "cheating" accusations)

in-game support is the most liked user-feature (but hardest to balance in terms of live data availability and "cheating" accusations)

in-game support is the most liked user-feature (but hardest to balance in terms of live data availability and "cheating" accusations)

analytical (post game) features have the highest learning value for users but a detailed analysis demands a sophisticated algorithm and constant rebalancing regarding meta-shifts etc

analytical (post game) features have the highest learning value for users but a detailed analysis demands a sophisticated algorithm and constant rebalancing regarding meta-shifts etc

analytical (post game) features have the highest learning value for users but a detailed analysis demands a sophisticated algorithm and constant rebalancing regarding meta-shifts etc

analytical (post game) features have the highest learning value for users but a detailed analysis demands a sophisticated algorithm and constant rebalancing regarding meta-shifts etc

the lions share of users focusses on a rough performance evaluation instead of a detailed analysis with improvement markers

the lions share of users focusses on a rough performance evaluation instead of a detailed analysis with improvement markers

the lions share of users focusses on a rough performance evaluation instead of a detailed analysis with improvement markers

the lions share of users focusses on a rough performance evaluation instead of a detailed analysis with improvement markers

The Vision

The Vision

With this foundation of insights the MVP focussed on the following two main drivers for product success:

Maximise the user group by supporting as many games as possible

various support levels per game (Base support: News, patch-notes, selected Youtube clips • Advanced: basic in-game data available for basic analytics • Top Tier: live-features and detailed reports)

various support levels per game (Base support: News, patch-notes, selected Youtube clips • Advanced: basic in-game data available for basic analytics • Top Tier: live-features and detailed reports)

various support levels per game (Base support: News, patch-notes, selected Youtube clips • Advanced: basic in-game data available for basic analytics • Top Tier: live-features and detailed reports)

various support levels per game (Base support: News, patch-notes, selected Youtube clips • Advanced: basic in-game data available for basic analytics • Top Tier: live-features and detailed reports)

gradual feature roll-out and game catalogue expansion based on a games playerbase, data availability & user feedback

gradual feature roll-out and game catalogue expansion based on a games playerbase, data availability & user feedback

gradual feature roll-out and game catalogue expansion based on a games playerbase, data availability & user feedback

gradual feature roll-out and game catalogue expansion based on a games playerbase, data availability & user feedback

Maximise the product usage to gather detailed usage data

combine general per-game news with in-game support & post-game analytics for a repetitive full game cycle support

combine general per-game news with in-game support & post-game analytics for a repetitive full game cycle support

combine general per-game news with in-game support & post-game analytics for a repetitive full game cycle support

combine general per-game news with in-game support & post-game analytics for a repetitive full game cycle support

news-feed approach for beneficial content consumption esp. in pre- and post-game and minimized feature card experiments

news-feed approach for beneficial content consumption esp. in pre- and post-game and minimized feature card experiments

news-feed approach for beneficial content consumption esp. in pre- and post-game and minimized feature card experiments

news-feed approach for beneficial content consumption esp. in pre- and post-game and minimized feature card experiments

constant product iteration & feature card experiments based on usage data and on-card feedback options

constant product iteration & feature card experiments based on usage data and on-card feedback options

constant product iteration & feature card experiments based on usage data and on-card feedback options

constant product iteration & feature card experiments based on usage data and on-card feedback options

bring the "AI-assistant" approach to life with smart user interactions and micro-animations

bring the "AI-assistant" approach to life with smart user interactions and micro-animations

bring the "AI-assistant" approach to life with smart user interactions and micro-animations

bring the "AI-assistant" approach to life with smart user interactions and micro-animations

Branding

&

Character

Filling Brand & Interactions with Character

Branding

&

Character

Filling Brand & Interactions with Character

Branding

&

Character

Filling Brand & Interactions with Character

Branding

&

Character

Filling Brand & Interactions with Character

Branding

Branding

Zack.ai is an intelligent gaming assistant that enables the user to focus on what matters most - enjoy gaming! He collects various news about the users favorite games from around the web, decides on what matters most for the specific user based on his preferences and delivers it in easily digestible bits.

A big goal from the very beginning was to really bring Zack to life and give him a distinct character so that the assistant experience would feel as real as possible — like a personal conversation whenever the user interacts with him.

Zack.ai is an intelligent gaming assistant that enables the user to focus on what matters most - enjoy gaming! He collects various news about the users favorite games from around the web, decides on what matters most for the specific user based on his preferences and delivers it in easily digestible bits.

A big goal from the very beginning was to really bring Zack to life and give him a distinct character so that the assistant experience would feel as real as possible — like a personal conversation whenever the user interacts with him.

Joy of use through animations

Joy of use through animations

This was the perfect place to integrate some well crafted micro animations even though they were mainly attached to a speech bubble in the early and fast paced stages of the product. The difference in the characters perception really felt like an upgrade.

This was the perfect place to integrate some well crafted micro animations even though they were mainly attached to a speech bubble in the early and fast paced stages of the product. The difference in the characters perception really felt like an upgrade.

loading

input request

input success

searching

We experimented early on with a more assistant-guided user experience to shape the platform just as much as the assistant brand itself. The early alpha version of the onboarding below demonstrates this vision quite nicely.

We experimented early on with a more assistant-guided user experience to shape the platform just as much as the assistant brand itself. The early alpha version of the onboarding below demonstrates this vision quite nicely.

Product Iteration

&

Design

From News-Feed to rich interactions & platform specific use-case split

Product Iteration

&

Design

From News-Feed to platform specific use-case split

Product Iteration

&

Design

From News-Feed to rich interactions & platform specific use-case split

Product Iteration

&

Design

From News-Feed to rich interactions & platform specific use-case split

Interface Evolution

Interface Evolution

To satisfy the main goal of small and compact bits of news, a feed view with smart cards was the clear choice for both visual & information architecture reasons. In pursuit of a perpetually minimalistic & clear interface, constant iterations of both the card UI & UX were necessary. Content became richer, interactive and more enjoyable to consume.

To satisfy the main goal of small and compact bits of news, a feed view with smart cards was the clear choice for both visual & information architecture reasons. In pursuit of a perpetually minimalistic & clear interface, constant iterations of both the card UI & UX were necessary. Content became richer, interactive and more enjoyable to consume.

One of the biggest factors that enabled us to constantly iterate & improve the product experience was a clearly structured & flexible atom design system. Cleverly nested symbols/components, clear naming conventions and a design library as a visual representation of the atom structure were our best friends.

One of the biggest factors that enabled us to constantly iterate & improve the product experience was a clearly structured & flexible atom design system. Cleverly nested symbols/components, clear naming conventions and a design library as a visual representation of the atom structure were our best friends.

Split of platform-specific usecases

Split of platform-specific usecases

To develop even better coverage of all the 3 game phases, we created a separate mobile-app and focussed on the separation of platform-specific use cases to generate more depth of information only where needed.

The mobile news-feed became focus for a maximized ease-of-use & fast consumption, while detailed strategies & game analysis received a more prominent role on dedicated per-game dashboards for the desktop client.

To develop even better coverage of all the 3 game phases, we created a separate mobile-app and focussed on the separation of platform-specific use cases to generate more depth of information only where needed.

The mobile news-feed became focus for a maximized ease-of-use & fast consumption, while detailed strategies & game analysis received a more prominent role on dedicated per-game dashboards for the desktop client.

Marketing

&

Cooperations

Approaching users from various angles & communication styles

User Journey

&

Cooperations

Solving Problems through Multichannel Guidance

Marketing

&

Cooperations

Approaching users from various angles & communication styles

Marketing

&

Cooperations

Approaching users from various angles & communication styles

In-house Marketing

In-house Marketing

Even the marketing efforts were constantly revamped on the basis of user feedback and various KPIs from our in-house analytics team. The landing page evolution a great example — it went from a minimalistic signup page in the alpha-phase to a detailed description of the product USP and introduction to our platforms including desktop & mobile.

The complexity of the markets prescription / reimbursement system had to be tackled through a well structured and extensively guiding customer journey that enables multiple entry points (doctor referrals, self-managed, etc.) and confidently guides the user with supportively chunked steps, reminders & info material.

Content Creator cooperations

Content Creator cooperations

In addition also we picked up on our marketing-learnings from previous products and combined clear introduction trailers from our own domain with personalised product-placement segments in cooperations with various gaming focussed content creators to reach our widely spread target audience.

The complexity of the markets prescription / reimbursement system had to be tackled through a well structured and extensively guiding customer journey that enables multiple entry points (doctor referrals, self-managed, etc.) and confidently guides the user with supportively chunked steps, reminders & info material.

Outcome

&

Reflection

Distilling the essence of Digital Product Design

Outcome

&

Reflection

Distilling the essence of Digital Product Design

Outcome

&

Reflection

Distilling the essence of Digital Product Design

Outcome

&

Reflection

Distilling the essence of Digital Product Design

Outcome

Outcome

Over the timespan of roughly a year Zack.ai managed to go from the first ideation phase past MVP testing and beta phase to a regularly iterated live product loved by millions of users.

Unfortunately, the concept of a delayed monetization through big user/usage data didn't develop enough traction — leading to closure of the complete user coaching oriented B2C section to cut costs and re-focus on the companies B2B business with its products Shadow.gg (nieche market of professional esports coaching) and BAYES (cash cow of analysing and selling game betting odds).

Over the timespan of roughly a year Zack.ai managed to go from the first ideation phase past MVP testing and beta phase to a regularly iterated live product loved by millions of users.

Unfortunately, the concept of a delayed monetization through big user/usage data didn't develop enough traction — leading to closure of the complete user coaching oriented B2C section to cut costs and re-focus on the companies B2B business with its products Shadow.gg (nieche market of professional esports coaching) and BAYES (cash cow of analysing and selling game betting odds).

+62

+62

+62

%

%

%

Session Time

3

3

3

X

X

X

Installs

+48

+48

+48

%

%

%

Daily Active Users

+48

+48

+48

%

%

%

DAU

Reflection

Reflection

My 3+ years working with Dojo Madness have been filled to the brim with learnings about both, what makes a successful product go from 0 to 1 but also that well thought out financial concepts still is the key to enable long term product and business success.

The final year of creating Zack was condensing all this to cliff notes for a better understanding on how to balance user- & market needs with business requirements through not only well crafted UI/UX and product design but also company-wide ideation, alignment & cooperation.

My 3+ years working with Dojo Madness have been filled to the brim with learnings about both, what makes a successful product go from 0 to 1 but also that well thought out financial concepts still is the key to enable long term product and business success.

The final year of creating Zack was condensing all this to cliff notes for a better understanding on how to balance user- & market needs with business requirements through not only well crafted UI/UX and product design but also company-wide ideation, alignment & cooperation.

Client & Peer Reviews

Praises, kind words & honest opinions

Client & Peer Reviews

Praises, kind words & honest opinions

Client & Peer Reviews

Praises, kind words & honest opinions

Jesaja Brinkmann

Co-Founder & CEO

Jesaja Brinkmann

Co-Founder & CEO

Working with Beni at Cara Care was a real privilege. He brings a rare blend of broad design skills — spanning UI/UX, motion, web, and print — and a deeply human-centered product mindset. He combines structure, curiosity, and critical thinking to create meaningful, user-focused solutions.

His communication is clear and adaptive, and he collaborates seamlessly across teams and disciplines. Above all, he’s humble, creative, and consistently elevates the people and products around him.

Jesaja Brinkmann

Co-Founder & CEO

Jesaja Brinkmann

Co-Founder & CEO

Working with Beni at Cara Care was a real privilege. He brings a rare blend of broad design skills — spanning UI/UX, motion, web, and print — and a deeply human-centered product mindset. He combines structure, curiosity, and critical thinking to create meaningful, user-focused solutions.

His communication is clear and adaptive, and he collaborates seamlessly across teams and disciplines. Above all, he’s humble, creative, and consistently elevates the people and products around him.

Jesaja Brinkmann

Co-Founder & CEO

Jesaja Brinkmann

Co-Founder & CEO

Working with Beni at Cara Care was a real privilege. He brings a rare blend of broad design skills — spanning UI/UX, motion, web, and print — and a deeply human-centered product mindset. He combines structure, curiosity, and critical thinking to create meaningful, user-focused solutions.

His communication is clear and adaptive, and he collaborates seamlessly across teams and disciplines. Above all, he’s humble, creative, and consistently elevates the people and products around him.

Jesaja Brinkmann

Co-Founder & CEO

Jesaja Brinkmann

Co-Founder & CEO

Working with Beni at Cara Care was a real privilege. He brings a rare blend of broad design skills — spanning UI/UX, motion, web, and print — and a deeply human-centered product mindset. He combines structure, curiosity, and critical thinking to create meaningful, user-focused solutions.

His communication is clear and adaptive, and he collaborates seamlessly across teams and disciplines. Above all, he’s humble, creative, and consistently elevates the people and products around him.

Want to talk?

Want to talk?

Want to talk?

No matter if you want to talk about your current / future product, problems to solve or just want to discuss design philosophy

Just book a quick 15 minute call and I will curiously unpack your story to see where our potential overlap might take us.

No matter if you want to talk about your current / future product, problems to solve or just want to discuss design philosophy

Just book a quick 15 minute call and I will curiously unpack your story to see where our potential overlap might take us.

No matter if you want to talk about your current / future product, problems to solve or just want to discuss design philosophy

Just book a quick 15 minute call and I will curiously unpack your story to see where our potential overlap might take us.

Book a Call

Book a Call

Contact Options

Contact Options

© 2025 Benjamin Erxleben

All rights reserved

© 2025 Benjamin Erxleben

All rights reserved