SENIOR GAME DESIGNER · 15+ YEARS
a.k.a. Choi Hwanjin
I design game systems, features and live operations — from first concept to launch and beyond. Fifteen years, six studios, many shipped titles.
A selection of shipped titles across mobile and PC — four of many from fifteen years. Click a title to watch it in action.
A strategy war game set in the world of CrossFire — one of the world's biggest FPS franchises. System & feature design with full live ops: events, progression and economy tuning.
A competitive turn-based RPG. I designed and balanced the gacha and battle systems, in-game events and reward economies, then kept the game growing through ongoing live operations.
Fast-paced multiplayer arena. Core loop, character & match systems, and balancing tuned from concept through global launch.
Snappy casual arcade title. Game feel, difficulty curve and reward pacing designed for short, replayable sessions.
Showing 4 of 10+ shipped titles — many more across six studios over 15 years.
“Good systems are invisible — players just feel a game that's fair, deep, and worth coming back to.”
I'm Liam (Choi Hwanjin), a Senior Game Designer with 15+ years of experience in game design, system design and live game operations.
I've led game features from concept to launch, working closely with artists, developers and product teams to ship and grow live titles. My focus is the invisible architecture behind a game — economies, progression, and the systems that keep players engaged long after release.
What I bring from fifteen years of building and running games.
Designing the rules, loops and structures that make a game tick.
Leading features from concept and spec through to a shipped, polished launch.
Events, content cadence and tuning that keep live games healthy and growing.
Currencies, progression and balancing for fair, sustainable monetization.
Aligning art, engineering and product around a single design vision.
Hands-on in Unity — UI implementation and asset integration.
Fifteen years across six studios.
Open to senior game design roles and consulting.