unity-physics SKILL.md skillA
unity-physics from gamedev-skills/awesome-gamedev-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add gamedev-skills/awesome-gamedev-agent-skills/unity-physics@git:20260925.77c2600Pins git:20260925.77c2600 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- gamedev-skills/awesome-gamedev-agent-skills
- Path
skills/unity/unity-physics/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260925.77c2600, committed Sep 25, 2026
- First version recorded
- Jun 24, 2026
- Size
- 8,611 bytes
- Repository stars
- 1,784
- License
- Apache-2.0
Set up 3D physics in Unity 6.3 LTS: Rigidbody movement and forces, colliders, triggers vs collisions, layer-based collision, raycasts, and joints. Use when adding a Rigidbody, handling OnCollisionEnter/OnTriggerEnter, tuning collision layers, casting rays, or when the user mentions Unity physics, AddForce, isKinematic, or linearVelocity.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Unity Physics (Rigidbody / PhysX) Make objects move, collide, and detect each other with Unity 6.3 LTS's built-in 3D physics (PhysX). Get the `FixedUpdate` discipline, trigger-vs-collision rules, and collision layers right. Targets **Unity 6.3 LTS (6000.3)**. > **Unity 6.3 LTS rename:** `Rigidbody.velocity` is now **`Rigidbody.linearVelocity`** (the old > name is deprecated). Code copied from older tutorials will warn or fail to compile. ## When to use - Use when giving an object physical motion (forces, velocity, gravity), responding to collisions or triggers, setting up collision layers/masks, raycasting for ground checks or line-of-sight, or connecting bodies with joints. - Use when scenes/prefabs contain `Rigidbody` + `Collider` components. **When *not* to use:** 2D physics (`Rigidbody2D`, `Collider2D`) is a separate API — adapt the concepts but the types differ. Cross-engine *feel* tuning (timestep, jitter, tunnelling) → `physics-tuning`. Reading input that drives movement → `unity-input-system`. ## Core workflow 1. **Add a `Rigidbody`** to anything that should be simulated; add a `Collider` to anything …
Read the whole file at its exact version.
How to install
mdr add gamedev-skills/awesome-gamedev-agent-skills/unity-physics@sha256:04743528de43e728The line at the top of this page pins the label git:20260925.77c2600, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_o5e45hsk2r5fxk4d)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jun 24, 2026 and Sep 25, 2026, about one every 47 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260925.77c2600 latest | 2026-09-25 | 77c2600 | 8,611 B | A | view · diff |
| git:20260808.3727d02 | 2026-08-08 | 3727d02 | 6,403 B | A | view · diff |
| git:20260624.213ac22 | 2026-06-24 | 213ac22 | 6,560 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8611 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
gamedev-skills/awesome-gamedev-agent-skills · 1,784 stars · license Apache-2.0 · pushed 2026-10-09 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_o5e45hsk2r5fxk4d GET https://markdownregistry.com/api/v1/resolve?ref=gamedev-skills/awesome-gamedev-agent-skills/unity-physics GET https://markdownregistry.com/api/v1/blob/04743528de43e72840c733b02d529685584e3eac1d13f0ea91c1d96347417ff1
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.