Developer Tools & Repos Agent Skills for Claude Code

Use when a cross-engine gameplay task needs a Layer 2 shared-runtime action-flow design for direct-call coupling, ad-hoc action queues…

Use when a cross-engine gameplay task needs a Layer 1 foundation for reusable condition semantics — preconditions, guard clauses…

Use when a cross-engine gameplay task needs a Layer 1 foundation for entity identity, stale references, payload safety, or…

Use when a cross-engine gameplay task needs a Layer 1 foundation for cost, spend, reservation, refund, or commit-and-rollback semantics…

Use when a cross-engine gameplay task needs a Layer 1 foundation for change callbacks, invalidation signals, observer updates, or…

Use when a cross-engine gameplay task needs a Layer 1 foundation for timer logic, update cadence, cooldown clocks, pause rules, or…

Juice, feedback layering, screen shake/particles/sound timing, the perception-action cycle, and 'why does this feel bad?' diagnostics.

Create, update, or validate a game's Game Design Document.

Game design assistant for exploring mechanics, authoring new games, and refining existing ones.

Per-frame performance and GC-pressure optimization for JS/TS game code.

Generates and manages industry-standard Game Design Documents (GDD) with a professional planning framework.

Run browser-game playtests and frontend QA.

Expert knowledge of Unity-based game skill configuration system.

Help users create .randsum.json specs for custom TTRPG dice mechanics.

Route early browser-game work. Use when the user needs stack selection and workflow planning across design, implementation, assets, and…

Use when a user wants to optimize specific games (FPS, latency, frame pacing, screen tearing) on Windows — per-game NVCP profiles…

Design UI surfaces for browser games. Use when the user asks for HUDs, menus, overlays, responsive layouts, or visual direction that must…

Game Center integration - achievements, leaderboards, matchmaking, multiplayer.

GameMaker Studio skill for GML scripting and 2D game patterns.

Comprehensive GameMaker Studio 2 and GML expertise covering beginner to advanced topics.

Guide beginners through exploring, comparing, refining, and validating gameplay ideas for digital games, tabletop games, and paper…