Threejs Gameplay Systems
valkor-ai/loom
Build and iterate playable Three.js game systems: starter scaffold, architecture, design briefs, core loops, level and encounter design, entities, input, camera, collision and physics, scoring…
Game design principles. An agent skill from xenitV1/Antigravity-Workflows.
Install Game Design
$ npx skills add xenitV1/Antigravity-Workflows --skill game-design -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install xenitV1/Antigravity-Workflows game-design --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/xenitV1/Antigravity-Workflows.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/game-development/game-design .claude/skills/game-design && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "game-design" agent skill from https://github.com/xenitV1/Antigravity-Workflows/tree/main/skills/game-development/game-design into .claude/skills/game-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/xenitV1/Antigravity-Workflows/tree/main/skills/game-development/game-designType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add xenitV1/Antigravity-Workflows --skill game-design -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install xenitV1/Antigravity-Workflows game-design --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xenitV1/Antigravity-Workflows.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/game-development/game-design .agents/skills/game-design && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "game-design" agent skill from https://github.com/xenitV1/Antigravity-Workflows/tree/main/skills/game-development/game-design into .agents/skills/game-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add xenitV1/Antigravity-Workflows --skill game-design -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install xenitV1/Antigravity-Workflows game-design --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xenitV1/Antigravity-Workflows.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/game-development/game-design .cursor/skills/game-design && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "game-design" agent skill from https://github.com/xenitV1/Antigravity-Workflows/tree/main/skills/game-development/game-design into .cursor/skills/game-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/xenitV1/Antigravity-Workflows.git --path skills/game-development/game-design--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add xenitV1/Antigravity-Workflows --skill game-design -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install xenitV1/Antigravity-Workflows game-design --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xenitV1/Antigravity-Workflows.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/game-development/game-design .gemini/skills/game-design && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "game-design" agent skill from https://github.com/xenitV1/Antigravity-Workflows/tree/main/skills/game-development/game-design into .gemini/skills/game-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install xenitV1/Antigravity-Workflows game-designInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add xenitV1/Antigravity-Workflows --skill game-design -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/xenitV1/Antigravity-Workflows.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/game-development/game-design .github/skills/game-design && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "game-design" agent skill from https://github.com/xenitV1/Antigravity-Workflows/tree/main/skills/game-development/game-design into .github/skills/game-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add xenitV1/Antigravity-Workflows --skill game-design -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install xenitV1/Antigravity-Workflows game-design --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xenitV1/Antigravity-Workflows.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/game-development/game-design .opencode/skills/game-design && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "game-design" agent skill from https://github.com/xenitV1/Antigravity-Workflows/tree/main/skills/game-development/game-design into .opencode/skills/game-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "game-design", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
game-design- GitHub stars
- 130
- Used in
- 9 other repos
- Token cost
- ~650 tokens
- SKILL.md length
- 217 words
- Files
- 1
- Skills in repo
- 42
- Repo updated
- First seen
- Licence
- MIT
At a glance
Game design principles. An agent skill from xenitV1/Antigravity-Workflows.
- Works in 6 steps: Core Loop Design → Game Design Document (GDD) → Player Psychology → …
- Tasks that involve Game design
- SKILL.md covers 1. Core Loop Design, 2. Game Design Document (GDD), 3. Player Psychology and 4. Difficulty Balancing, plus 2 more sections
- Calls just
What it does
Game Design is an agent skill from xenitV1/Antigravity-Workflows. Game design principles. GDD structure, balancing, player psychology, progression.
Its SKILL.md is about 650 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Game Development, covering Game design. The licence is MIT.
When your agent uses it
- Tasks that involve Game design
Example prompts
- “/game-design”
Requirements
- Pre-approved tools (allowed-tools): Read, Glob, Grep
Workflow steps
6 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit f0a1fa7. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadGlobGrep
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
just
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Game Design loads about 650 tokens when it runs. Until then it costs about 23 tokens; SKILL.md has 217 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from xenitV1/Antigravity-Workflows at commit f0a1fa7, republished under its MIT licence (© xenitV1). 217 words, ~650 tokens.
Download SKILL.mdSave it as
.claude/skills/game-design/SKILL.md (or your agent's skills folder).- name
- game-design
- description
- Game design principles. GDD structure, balancing, player psychology, progression.
- allowed-tools
- Read, Glob, Grep
Game Design Principles
Design thinking for engaging games.
1. Core Loop Design
The 30-Second Test
Every game needs a fun 30-second loop:
1. ACTION → Player does something
2. FEEDBACK → Game responds
3. REWARD → Player feels good
4. REPEATLoop Examples
| Genre | Core Loop |
|---|---|
| Platformer | Run → Jump → Land → Collect |
| Shooter | Aim → Shoot → Kill → Loot |
| Puzzle | Observe → Think → Solve → Advance |
| RPG | Explore → Fight → Level → Gear |
2. Game Design Document (GDD)
Essential Sections
| Section | Content |
|---|---|
| Pitch | One-sentence description |
| Core Loop | 30-second gameplay |
| Mechanics | How systems work |
| Progression | How player advances |
| Art Style | Visual direction |
| Audio | Sound direction |
Principles
- Keep it living (update regularly)
- Visuals help communicate
- Less is more (start small)
3. Player Psychology
Motivation Types
| Type | Driven By |
|---|---|
| Achiever | Goals, completion |
| Explorer | Discovery, secrets |
| Socializer | Interaction, community |
| Killer | Competition, dominance |
Reward Schedules
| Schedule | Effect | Use |
|---|---|---|
| Fixed | Predictable | Milestone rewards |
| Variable | Addictive | Loot drops |
| Ratio | Effort-based | Grind games |
4. Difficulty Balancing
Flow State
Too Hard → Frustration → Quit
Too Easy → Boredom → Quit
Just Right → Flow → EngagementBalancing Strategies
| Strategy | How |
|---|---|
| Dynamic | Adjust to player skill |
| Selection | Let player choose |
| Accessibility | Options for all |
5. Progression Design
Progression Types
| Type | Example |
|---|---|
| Skill | Player gets better |
| Power | Character gets stronger |
| Content | New areas unlock |
| Story | Narrative advances |
Pacing Principles
- Early wins (hook quickly)
- Gradually increase challenge
- Rest beats between intensity
- Meaningful choices
6. Anti-Patterns
| ❌ Don't | ✅ Do |
|---|---|
| Design in isolation | Playtest constantly |
| Polish before fun | Prototype first |
| Force one way to play | Allow player expression |
| Punish excessively | Reward progress |
Remember: Fun is discovered through iteration, not designed on paper.
© xenitV1, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/game-development/game-design of xenitV1/Antigravity-Workflows.
Open the folder on GitHubat commit f0a1fa7
Used in 9 other repositories
We found 26 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 9 other GitHub owners. This page covers the copy in xenitV1/Antigravity-Workflows, which our catalogue first saw on October 7, 2026.
- davila7/claude-code-templatescli-tool/components/skills/creative-design/game-development/game-design
- aiskillstore/marketplaceskills/sickn33/game-designskills/sickn33/game-development/game-design
- sickn33/agentic-awesome-skillsskills/game-development/game-designplugins/agentic-bundle-indie-game-dev/skills/game-design+2 more
- Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI.agent/skills/game-development/game-design
- agent-skills-hub/agent-skills-hubskills/game-development/game-design
- lingxling/awesome-skills-cnantigravity-awesome-skills/skills/game-development/game-designantigravity-awesome-skills/plugins/agentic-bundle-indie-game-dev/skills/game-design+2 more
- benjaminasterA/antigravity-awesome-skillsskills/game-development/game-design
- diegosouzapw/awesome-omni-skillsskills/game-development/game-designskills/game-development-v2/game-design+2 more
- henryalouf/ruflow.agents/skills/game-development/game-design.agents/skills/antigravity-awesome-skills/skills/game-development/game-design+6 more
Compare with similar skills
Game Design next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Game Design this skillxenitV1/Antigravity-Workflows | 130 | 9 repos | ~650 | Automated safety check: Pass | MIT | |
| Threejs Gameplay Systemsvalkor-ai/loom | 1.2k | 1 repos | ~1.4k | Automated safety check: Pass | Apache-2.0 | |
| Godot Gdscript Patterns925236118/AlphaAgent | 103 | 10 repos | ~5k | Automated safety check: Pass | MIT | |
| Game Asset Spec WriterDonchitos/Claude-Code-Game-Studios | 26k | — | ~5k | Automated safety check: Pass | MIT | |
| Game Build From Designzenstory-ai/novel-to-game | 841 | — | ~661 | Automated safety check: Pass | MIT | |
| Game Experience Density OptimizerDY-2026/GameDesignOS | 415 | — | ~2.1k | Automated safety check: Pass | MIT |
Similar skills
Godot Gdscript Patterns
925236118/AlphaAgent
Master Godot 4 GDScript patterns including signals, scenes, state machines, and optimization.
Game Asset Spec Writer
Donchitos/Claude-Code-Game-Studios
Writes per-asset visual specs and AI image-generation prompts for a game's characters, enemies and screens, driven by the GDD, art bible and an entity inventory.
Game Build From Design
zenstory-ai/novel-to-game
Builds a risk-matched whitebox or an approved production game candidate from a game design for its target runtime, with replayable evidence.
Game Experience Density Optimizer
DY-2026/GameDesignOS
当用户需要把游戏体验浓度、留存、首局节奏、Demo 完成率、单机总旅程、D1/D7、反馈、具身感、氛围、认知负荷、最佳刺激窗口、FEP/free-energy、预测误差、Markov blanket、习惯化或 liveops 参与问题，编译成可上线、可埋点、可复盘、可回滚的一周 ED 实验包时使用。Use when converting game experience-density and…
Threejs Gameplay Systems
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Related
Categories
Questions about Game Design
What does Game Design do?
Game design principles. An agent skill from xenitV1/Antigravity-Workflows. Game Design is an agent skill from xenitV1/Antigravity-Workflows. Game design principles.
When should I use Game Design?
Game Design fits situations like: tasks that involve Game design.
How do I install Game Design in Claude Code?
Run `npx skills add xenitV1/Antigravity-Workflows --skill game-design -a claude-code`. Or copy the skill folder (skills/game-development/game-design in xenitV1/Antigravity-Workflows) into .claude/skills/game-design in your project. Claude Code loads it when a task matches its description.
How do I install Game Design in Codex?
Run `npx skills add xenitV1/Antigravity-Workflows --skill game-design -a codex`. Or copy the skill folder (skills/game-development/game-design in xenitV1/Antigravity-Workflows) into .agents/skills/game-design in your project. Codex loads it when a task matches its description.
Can I use Game Design in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add xenitV1/Antigravity-Workflows --skill game-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/game-design, .gemini/skills/game-design, .github/skills/game-design and .opencode/skills/game-design in your project.
What does Game Design need to run?
Going by SKILL.md and its folder, Game Design needs the command-line tools its instructions call (just). Its frontmatter pre-approves these tools: Read, Glob, Grep.
Does Game Design access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Game Design safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Game Design use?
Game Design is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Game Design use?
About 650 tokens (SKILL.md is roughly 2.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Game Design?
Skills that share tags, products or a category with Game Design: Threejs Gameplay Systems (valkor-ai/loom, 1.2k stars), Godot Gdscript Patterns (925236118/AlphaAgent, 103 stars), Game Asset Spec Writer (Donchitos/Claude-Code-Game-Studios, 26k stars) and Game Build From Design (zenstory-ai/novel-to-game, 841 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Game Design?
xenitV1 (a GitHub user) maintains it in xenitV1/Antigravity-Workflows, which has 130 GitHub stars. The repository holds 42 skills in this directory. The repository was last updated on January 14, 2026.
Source: xenitV1/Antigravity-Workflows on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.