awesome-gamedev-agent-skills is a collection of 73 instruction files that give AI coding agents specialized guidance for game development with engines and frameworks such as Godot, Unity, Unreal, and Phaser. It helps agents choose relevant engine and task guidance while building games. The catalogue entries are the collection's skills and plugins for agents including Claude Code, Cursor, Codex, and Gemini CLI.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add gamedev-skills/awesome-gamedev-agent-skills --skill physics-tuninggit clone --depth 1 https://github.com/gamedev-skills/awesome-gamedev-agent-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/gamedev-skills/awesome-gamedev-agent-skills/physics-tuning)<a href="https://agentmods.dev/skills/gamedev-skills/awesome-gamedev-agent-skills/physics-tuning"><img src="https://agentmods.dev/badge/skills/gamedev-skills/awesome-gamedev-agent-skills/physics-tuning/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/gamedev-skills/awesome-gamedev-agent-skills/physics-tuning"><img src="https://agentmods.dev/badge/skills/gamedev-skills/awesome-gamedev-agent-skills/physics-tuning.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00083 | $0.02050 |
| Opus 5.5 | $0.00033 | $0.00820 |
| Sonnet 5.5 | $0.00017 | $0.00410 |
| Haiku 4.5 | $0.00008 | $0.00205 |
Grade A, and why
physics-tuning scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
1 near-identical copy found in the catalogue:
- physics-tuning — 89% identical, 37 lines differ
How it starts
The opening of the file, as written. The whole thing — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Physics tuning
Most "bad physics" is not a bug in the engine — it's a mismatch between the
fixed-timestep simulation and the variable-rate render loop, or untuned
mass/drag/CCD/layer settings. This skill covers the engine-neutral knobs that
make physics stable and responsive; pair it with godot-physics or
unity-physics for the concrete APIs.
When to use
- Use when motion jitters, objects pass through walls (tunneling), stacks explode, or movement feels floaty/sticky/laggy.
- Use to decide what goes in the fixed (physics) step vs the render frame, and how to interpolate between them.
- Use to tune gravity, mass, drag, restitution, solver iterations, sleeping, and collision layers/masks.
When not to use: for an engine's exact physics nodes/components and
collision callbacks, use godot-physics or unity-physics. For movement
decisions (when to jump, AI steering) use input-systems and game-ai. For
platformer jump-feel specifics like coyote time/jump buffering, that's input/
controller territory — see input-systems and the platformer genre.
Core workflow
- Run physics on a fixed timestep. Simulate at a constant rate (e.g. 50–60
Hz). A fixed
dtmakes the simulation deterministic-ish and stable; a variabledtmakes integration and collisions inconsistent. - Put physics work in the physics callback, not the render frame. Apply
forces/velocities and read collisions in the fixed step (
FixedUpdate/_physics_process), using that step'sdt. - Interpolate rendering between physics ticks. The render frame rate ≠ the physics rate, so smoothly interpolate transforms toward the latest physics state, or enable the engine's Rigidbody interpolation, to remove visible stutter.
- Tune the body, not the scene. Set mass for relative weight, drag for damping, gravity scale per object, and restitution/friction via materials.
- Stop tunneling with CCD on small/fast bodies; cap maximum velocity.
- Stabilize stacks/joints with more solver iterations, sane mass ratios, and sleeping for resting bodies.
- Verify by feel and stress test. Play at low and high frame rates; throw fast objects at thin walls; stack and shove bodies. Report what you observed.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago Changed · +15 lines 3e0f3d9ad049
- 1mo ago First seen · 150 lines · 83 tokens per session scan A faa9a50d465c
physics-tuning is a skill published in the GitHub repository gamedev-skills/awesome-gamedev-agent-skills (4,867 stars, last pushed 3d ago), licensed Apache-2.0. It adds 83 tokens to every session and 2,050 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
editor-session-quit
Save and quit an editor that a CLI session started (unity-mcp-cli exec, open --headless). Needs the session lease nonce; an editor the user opened is never closed. Used by unity-mcp-cli close.
screenshot-game-view
Capture a screenshot of the Unity Editor's Game View by reading its internal render texture directly. Image size matches the current Game View resolution; the tool corrects Y-flip on DirectX / Metal so the output is always upright. Requires an open Game View window.
dialogue-manager
Use when using the Dialogue Manager addon — .dialogue files with titles, responses, conditions and mutations, runtime balloons, and C# support.
event-bus
Use when implementing decoupled communication between nodes — global EventBus autoload with typed signals.
physics-system
Use when working with physics bodies, collision shapes, raycasting, areas, rigid bodies, ragdolls, soft bodies, Jolt physics, and physics interpolation in Godot 4.3+.
biome-detail-tuning
Configure and tune Unity Terrain detail (grass/flower/fern) placement for MapGenerator biomes using prefabs and noise-driven clustering. Covers the full workflow from prefab selection through noise parameter tuning to external audit verification and performance optimization. Use when: setting up detail for any biome…