Jacky Tam

CTO / Lead Engineer, Splitting Point Studios

I build the systems behind some of the highest-concurrency games ever shipped: 21M+ concurrent players served by 3.5M+ server instances, with 35.4B+ visits to date.

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Games

• Grow a Garden & Grow a Garden 2 · Core Engineer

  Peak: 21M+ CCU · 66M+ DAU · 3.5M+ concurrent server instances

  Grow a Garden 2: 474,632 playing now · 1.5B visits

  Grow a Garden: 32,942 playing now · 35.8B visits

  Economy datastore architecture (session locking, anti-duplication), PRNG-derived consistent world state, zero-downtime data migrations, anti-exploit, data-driven live-ops.

• A Dusty Trip · Core Engineer

  13,404 playing now · 2.5B visits

  Vehicle systems (plane, helicopter, tank), NPC system, procedural terrain generation, garage and rotating shops.

• Plants vs Brainrots · Core Engineer

  3,284 playing now · 4.7B visits

  Entity simulation layer (custom ECS) with radial culling and distance-based update and animation stepping.

• Slap Duels · Core Engineer

  2,259 playing now · 102.3M visits

  External distributed matchmaking integration and ELO rating system.

• Steep Steps · Core Engineer

  44 playing now · 170M visits

  Server-side anti-cheat and validation systems, mountain creator tool.

Projects

• StyLua Public Service

  Public code-formatting API for Luau in Rust: axum, Redis-backed job queue, worker fleet with visibility timeouts and a reaper.

• LeetLuau

  LeetCode-style DSA practice platform for Luau: curated problem sets, Monaco editor, and a Luau judge.

• Chalk

  Open-source, metatable-driven Luau rich-text library.

• Custom Rich-Text Renderer

  Proof-of-concept renderer supporting video, GIFs, images, and buttons via a rich-text XML syntax.

perthys@perthys.cc