Prototyping · Playtesting · Contract Work

Turn ideas into something
you can play, click or walk through.

hOSHI UG is the indie studio & consultancy of Prof. Heiko Ihde — Professor for Immersive & Interactive Design at mdh Berlin, with 26+ years in the games industry. Now taking on select contracts.

Start a project See the offers
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What hOSHI has to offer

Five contract offers

Fixed-scope sprints with clear deliverables — from prototypes to playtesting. Senior craft, indie-studio rates — no agency overhead.

🎮

Professional Playtesting

Expert gameplay evaluation from a professor who has finished ~700 games and played thousands. Structural analysis, UX feedback, and design review — not just bug reports.

game evaluation
🕹️

Professional Prototyping

A playable game, AR or VR prototype in 2–4 weeks. Perfect for pitches, funding rounds, or validating a mechanic before full production.

2–4 weeks
🧊

Digital Twin Starter

A 3D visualization of a space, product or process — built on the same approach used for Amazon Web Services customer prototypes across EMEA.

Babylon.js / Unity
🌐

Front-end Website

Clean, fast HTML / CSS / JS landing pages and product sites. No bloated frameworks — just solid, responsive front-end craft.

HTML / CSS / JS
📱

App Prototype

A clickable MVP so you can test an idea with real users before committing to full development.

clickable MVP
Prototypes & Contract Work

Proof, not promises

Real work delivered for clients — prototypes, digital twins, VR/AR and games. Hover a video to watch.

Real Environment to 3D

Prototype visualization — for presentations, simulations, and emergency training.

Dynamic Star System

Babylon.js — interactive 3D web application for a client.

Water Tank Digital Twin

3D, AR & VR Digital Twin with IoT — real-time visualization of a water tank.

Storage Tanks & Pumps Digital Twin

3D digital twin of storage tanks and pumps with IoT integration.

VR Cardboard — Governmental Use Case

VR Cardboard prototype on Samsung smartphones for a governmental client.

VR Experience — Government Client

VR Cardboard prototype on Samsung smartphones for a governmental client.

AR Prototype — Car Brake Maintenance

Web-based AR prototype for car brake maintenance — built at AWS.

Elevator Escape Room

Unity escape room — development by BBIT Solutions, Game Design & 3D by me.

Why hOSHI UG

Senior range, indie rates

Track record

Selected games & experiments

Reference links to the stores. Each title is a live demo of the craft behind the contract work.

More on Steam (hOSHI UG).

Let's talk

Got a prototype, visualization, or game in need of expert eyes?

Tell me about your project — game, AR/VR, digital twin, front-end, app MVP, or playtesting. Senior craft, indie-studio rates, clear deliverables.

email
or find me on LinkedIn
Taking contract prototypes now Get a quote