Skill Claude CodeCodex
Brainstorm a game idea through one-question-at-a-time designer interviews. Produces game.md, systems-index.md, and art-direction.md, or runs as discussion-only.
not rated 67
+2 11d ago A 39 tokens
67Stars on the repository
22Mods indexed here, across every type
11d agoLast push, which is what freshness is scored on
noneNo LICENSE: all rights reserved, so bodies are not copied
gat-design
02Skill Claude CodeCodex
Design one system within a specific milestone's scope: write the milestone-scoped system GDD, content data, and system art doc, and update the milestone brief's progress. Requires a mandatory milestone argument.
not rated 67
+2 11d ago A 44 tokens
Skill Claude CodeCodex
Plan milestone slices from overview + narrative alone (no system GDDs required), create per-milestone directory skeletons and briefs, and write gat/milestone/milestone.md. Runs before per-system design. Stops before technical design, task breakdown, or implementation.
not rated 67
+2 11d ago A 60 tokens
gat-story
04Skill Claude CodeCodex
Develop game story and narrative through one-question-at-a-time writer interviews. Produces narrative docs under gat/narrative/ or runs as discussion-only. Use when the user wants story, plot, lore, worldbuilding, characters, quests, dialogue, narrative tone, or authored story content for a GAT game.
not rated 67
+2 11d ago A 66 tokens
Skill Claude CodeCodex
Inspect the repo state and show a status panel across all milestones, recommending the earliest actionable next step in the workflow.
not rated 67
+2 11d ago A 28 tokens
Skill Claude CodeCodex
Generate procedural 3D models from natural-language requests by writing a constrained buildModel(ctx) module that uses Three.js, bundled builders and helpers, deterministic validation and export scripts, PNG previews, and optional browser visual review. Use when needs to create, revise, export, or visually audit…
not rated 67
+2 11d ago A 90 tokens
Skill Claude CodeCodex
READ this skill when implementing or configuring animation-style shaders (Toon/Cel Shaders) — including outlines, rim lighting, toon shading, MatCap, emission, dissolve, hatching, or any stylized rendering effect. Contains preset styles and feature-to-reference mappings for lilToon, Poiyomi, UTS2, RToon, SToon, and…
not rated 67
+2 11d ago A 107 tokens
Skill Claude CodeCodex
READ this skill when designing or planning any game system architecture — including combat, skills, AI, UI, multiplayer, narrative, or scene systems. Contains paradigm selection guides (DDD / Data-Driven / Prototype), system-specific design references, and mixing strategies. Works as a domain knowledge plugin…
not rated 67
+2 11d ago A 78 tokens
Skill Claude CodeCodex
Specialized in game numerical design, this skill designs first-pass game balance values, diagnoses and tunes existing systems, and evaluates balance proposals by building and running executable models, simulators, parameter sweeps, and evidence checks. Use for combat, progression, economies, items/builds…
not rated 67
+2 11d ago A 98 tokens
Skill Claude CodeCodex
Review, critique, compare, improve, or stress-test an existing game concept, GDD, mechanic, puzzle, economy, level, theme, emotional arc, interface, narrative, social feature, prototype, pitch, or playtest result. Use when the user asks what is weak, risky, unclear, unbalanced, contradictory, insufficiently engaging…
not rated 67
+2 11d ago A 102 tokens
Skill Claude CodeCodex
Plan, generate, inspect, vision-evaluate, refine, and package images and visual assets for game development through a backend-agnostic production loop. Use for PNG or SVG props, icons, characters, environments, tiles, UI, HUD/gameplay screens, VFX, transparent cutouts, concept or worldbuilding boards, sprite sheets…
not rated 67
+2 11d ago A 147 tokens
gpt-image
12Skill Claude CodeCodex
Execute image generation, editing, and chroma-key transparent-background workflows with GPT Image 2 / gpt-image-2 through the bundled scripts. Use when GPT Image is the selected backend and a supplied prompt or edit instruction must be executed for text-to-image generation, reference-image editing, multi-reference…
not rated 67
+2 11d ago A 101 tokens
Skill Claude CodeCodex
Comprehensive ImageMagick 7 command-line image processing for inspecting, converting, resizing, cropping, compositing, masking, drawing, annotating, color correction, quantization, filtering, morphology, distortion, animation, montage, comparison, metadata, batch automation, and advanced pixel analysis. Use whenever a…
not rated 67
+2 11d ago A 171 tokens
Skill Claude CodeCodex
Remove image backgrounds locally with Lucida's bgr CLI and save transparent RGBA PNGs while preserving soft alpha in glass, smoke, glow and VFX, camouflage, text and logos, line art, illustrations, and print designs. Use when a user asks to remove, erase, isolate, cut out, or make the background of an image…
not rated 67
+2 11d ago A 101 tokens
Skill Claude CodeCodex
Generate images through OpenRouter's dedicated Image API. Use this skill whenever the user wants to create, render, generate, or save images with OpenRouter, including text-to-image, image-to-image/reference images, choosing OpenRouter image models, listing image models, setting resolution/aspect ratio/quality/output…
not rated 67
+2 11d ago A 99 tokens
Skill Claude CodeCodex
Generate and download videos through OpenRouter's dedicated asynchronous Video API. Use this skill whenever the user wants to create, render, generate, poll, resume, or save an OpenRouter video, including text-to-video, first/last-frame image-to-video, reference-to-video, choosing or listing video models, setting…
not rated 67
+2 11d ago A 111 tokens
Skill Claude CodeCodex
Extract ordered still-image frames from local video files with FFmpeg, using a fixed FPS, an exact frame count, explicit timestamps, or every source frame; optionally remove a flat chroma-key background and emit timing metadata. Use for video-to-frame conversion, animation frame sampling, contact-sheet inputs, sprite…
not rated 67
+2 11d ago A 109 tokens
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: