Who I Am

Hi, I’m Justin Chellah, a self-taught game developer with 10+ years of experience building gameplay systems, server-side plugins, and custom multiplayer mechanics for Source engine titles including CS:GO, Team Fortress 2, Left 4 Dead 2, and Garry’s Mod. From 2016 to 2021, I ran my own Left 4 Dead 2 gaming community, Unity Gaming Network, where we hosted PvP servers featuring many custom gameplay systems – most of which are showcased in my portfolio.

Unity Gaming Network grew into a popular and competitive community, attracting players from around the world. Some of the gameplay systems we developed were inspired by CS:GO, adding unique twists and challenges while maintaining competitive balance and engaging gameplay. Running the community taught me not just game development, but also how to design engaging multiplayer experiences and run a lively multiplayer community.

This experience also gave me the chance to work directly with the Source SDK used across CS:GO and Team Fortress 2, and is where I developed the core skills that underpin my work today.

The Early Days

At 14, I began learning how to mod and develop plugins for Counter-Strike 1.6 on the GoldSrc engine. I found the creative process so fulfilling that it quickly became more than just a hobby.

Between those early days and 2016, I also developed multiplayer cheats for games like A.V.A (by NEOWIZ) and Call of Duty 4. This gave me early hands-on experience with game internals, memory manipulation, reverse engineering, and runtime systems analysis.