Hi, I'm Marcin Smoła — fcolor04
Game developer and programmer behind Mr. Cloak, Jump Challenge!, GeoJelly and Land of Mushrooms, published under Nova Reactor. I work at Source Byte, build open-source tools on the side — and I'm open to work.
Mr. Cloak is a 2D stealth adventure by Marcin Smoła (fcolor04). Slip through the labyrinth of Dravaneth by avoiding light, reading patrols and choosing your route. Steam demo live, …
Read more →A catalog of my releases and game-jam prototypes, each with its own page, tags and store links.
Open-source tools and experiments from GitHub, color-coded by language.
Devlogs, release notes and lessons learned while shipping games.
Downloadable production helpers and reusable game-dev assets. (Coming soon.)
Follow development, share feedback and chat about games and tools.
I’m a game developer and programmer with years of shipped titles across PC and consoles. I’m most at home in Unity (C#) and Godot (GDScript), and I enjoy diving into lower-level work in C++, Zig and Odin. If you need a developer who can take a feature from prototype to release — gameplay, systems, tooling, or performance — let’s talk.