Developer Tools & Repos Agent Skills for Devin Desktop

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.

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

Expertise in F2P economics, virtual currencies, and ethical monetization strategiesUse when "game monetization, F2P economy, in-app…

Main orchestrator for web game development.

Zero-GC game patterns with JEngine using modern C# 9+.

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.

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

Integrate new or updated gameplay modes into the existing game app end-to-end, including lobby registration, navigation wiring, state…

Use when building ANY 2D or 3D game with SpriteKit, SceneKit, or RealityKit, or adding touch controls or game controller support.

Debug and resolve common Gamma API errors.

Understand and manage Gamma API rate limits effectively.

Handle Gamma webhooks and events for real-time updates.