Hi, I'm game developer passionate about game design, programming, tech art & VFX. I love blending creativity with technology to craft unique player experience.

Radoslaw Sobolewski | Linktree

Links

itch.io

Commercial Projects

 HELLCARD II on Steam

Online, co-op, deck building, roguelike game in Unreal Engine 5.

My responsibilities:
- Implementation of game features in Unreal Engine 5 using both, Blueprints and C++
- Set-up of Unreal Engine 5 console development kits
- Building and testing on consoles
- Working with Unreal Insights determining crucial places for optimization
- Implement the UI elements based on the given design
- Extending the engine capabilities by implementing previews for our own assets

Hellcard II

Hexer on Steam

In-house example game mod, made for Hellcard game to serve as a test for modding pipeline and example for the community, how to make new mods. All the code and assets were made public here: https://github.com/ThingTrunkOfficial/hellcard-mod-support

My responsibilities:
- Research possibilities and potential of AngelScript as tool to make additional content for modders 
- Integration of C++ hooks with AngelScript
- Co-design the main content for the example mod including, character, cards, artifacts, influences
- Use of Miro as a tool to brain storm the ideas and mind maps
- Creating assets based on approved design using in-house game engine editor

Hexer

HELLCARD on Steam

Online, co-op, deck building, roguelike game made entirely with inhouse C++ game engine.

My responsibilities:
- Development of an in-house engine written in C++ 
- Researching experimental game features
- Debugging and resolving singleplayer and multiplayer bugs reported by players
- Implementing new content to the game based on the given design, including  new monsters, Gargoyles and their features
- Writing documentation about influence effects
- Working with a custom game editor 

Hellcard

Show page

Package of games made in Unity to support communication and social abilities for children on the autism spectrum.

My responsibilities:
- Making games with use of Unity Engine on interactive floors
- Making games according to the given documentation
- Collaboration with graphic department in the matter of visual side of games
- Making VFX varying visual side of games
- Testing games on target device with Linux system

SEN - ASD - Application package

Personal Projects

Let's play

Puzzle, casual game about connecting blocks. Made in Unity. It was showcased at the ZTGK 2025 contest, where it was ranked in the Top 3 in the Mobile Game category.

Video presenting gameplay is here: https://vimeo.com/1092532325

My responsibilities:
- Design of main game loop
- Creating new obstacles for players to diverse the game
- Create and design of all VFX
- Implementation of level creation tool to quickly test the ideas
- Adjust the game UI to mobile screens
- Ensure that game builds for every target platform

BoxBond

Mobile game about little blob traveling through the space. It was showcased at the ZTGK 2024 contest, where it was ranked in the Top 3 in the Mobile Game category and was awarded by Digital Dragons team.

Video presenting gameplay is here: https://vimeo.com/962530883

My responsibilities:
- Co-design of main game loop
- Implementation of soft body physics of main character
- Create and design of all VFX
- Adjust the game UI to mobile screens
- Design and implementation of new obstacles for the player
- Design the player movement by rotating your phone


B(l)ob

Board game about being the fastest fisherman. Game was made at Lodz You Play Board game jam where gained special award from juries.
Link with instruction: https://www.canva.com/design/DAGpw3IWVvM/SUAcCb2ZwRIC0coFhR1-sg/edit?utm_content=DAGpw3IWVvM&utm_campaign=designshare&utm_medium=link2&utm_source=sharebutton

Mi to rybka - Board game

Go to code

Game engine and game made in it. I learned a lot about how game engines work.

Game engine features:
- Written in C++
- Entity component system
- Physical based rendering
- Basic editor
- Screen space ambient occlusion
- Reading and writing scene information from YAML
- Frustum culling
- Integration with Tracy profiler
- Inverse kinematics implementation
- Skeletal animations
- Instanced dancing robots
- State machines

Custom Game engine

I made a fully functional NES emualator. I learned a lot about low level programming and how the hardware works. 

Presentation of emulator: https://vimeo.com/1055017400

Features:
- Written in C++
- Emulation of every component of console including processor, picture and audio processing units, memory
- Accurate implementation of components cycle system
- Accurate components synchronization
- Mapper0 and iNES1.0 game format support

NES Emulator

Cellular automata simulation but in 3D space.

Features:
- Written in C++
- First time meeting with Vulkan
- Up to 4 different cell states
- Up to 10000 cells
- Used instancing to render all the cells

3D Cellular automata simulation

Additional Activities

I actively participate in a local board game testing group at Goblin Pub, providing structured feedback on gameplay balance, mechanics clarity, and player experience. Collaborate with designers to identify improvement areas and refine prototypes through multiple testing sessions.


Board games testing group