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2d-games

2D game development principles. Sprites, tilemaps, physics, camera.

38

Quality

36%

Does it follow best practices?

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SecuritybySnyk

Passed

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tessl review fix ./plugins/antigravity-bundle-indie-game-dev/skills/game-development/2d-games/SKILL.md

The canonical home for this skill is 2d-games in administrakt0r/AI-Agents-Safe-Coding-Skills

SKILL.md
Quality
Evals
Security

Quality

Content

28%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

This skill reads as a high-level taxonomy or cheat sheet of 2D game development concepts rather than an actionable skill. It lacks any executable code, concrete implementation guidance, or workflow steps. While the table-based organization is clean, the content largely covers general knowledge Claude already possesses, making it low-value as a skill file.

Suggestions

Add concrete, executable code examples for at least the core topics (sprite setup, tilemap creation, physics configuration) in a specific framework like Pygame, Godot, or Unity 2D.

Transform the conceptual lists into actionable workflows — e.g., 'Setting up a tilemap: 1. Define tile size... 2. Create atlas... 3. Implement auto-tiling...' with actual code at each step.

Remove or drastically reduce content Claude already knows (animation principles, basic collision shapes, camera types) and focus on non-obvious implementation details, gotchas, and patterns.

Remove the boilerplate 'When to Use' section at the end, which adds no value.

DimensionReasoningScore

Conciseness

The content is reasonably organized with tables for efficiency, but includes several things Claude already knows well (basic animation principles like squash/stretch, what collision shapes are, basic camera types). The final 'When to Use' section is boilerplate filler. Some sections like genre patterns add value but others explain fundamentals.

3 / 5

Actionability

The skill is entirely descriptive and conceptual — no executable code, no concrete commands, no specific implementation examples. It reads like a reference card of general game dev knowledge rather than actionable guidance Claude could follow to build something. There are no code snippets, no framework-specific instructions, and no concrete steps.

1 / 5

Workflow Clarity

There is no workflow or sequenced process at all. The content is organized as a reference taxonomy of concepts rather than steps to follow. For a skill about 2D game development, there's no guidance on how to actually set up a sprite system, implement a tilemap, or configure physics — just categorized lists of considerations.

2 / 5

Progressive Disclosure

The content is structured with clear sections and tables, which aids readability. However, there are no references to external files for deeper dives, and some sections (like genre patterns) could benefit from being split out. For a standalone skill with no bundle, the internal organization is decent but the content is shallow enough that progressive disclosure isn't really leveraged.

3 / 5

Total

9

/

20

Passed

Description

45%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description identifies a clear domain (2D game development) and lists relevant subtopics, but reads more like a tag list than a functional skill description. It lacks action verbs describing what the skill does and completely omits any 'when to use' guidance, which significantly reduces its effectiveness for skill selection among many options.

Suggestions

Add a 'Use when...' clause with trigger phrases like 'Use when the user is building a 2D game, working with sprites, implementing tile-based levels, or adding game physics.'

Replace the noun list with concrete action descriptions, e.g., 'Creates and animates sprites, builds tilemaps for level design, implements 2D physics and collision detection, manages game camera systems.'

Include additional natural trigger terms and synonyms such as 'platformer', 'side-scroller', 'collision detection', 'sprite sheets', 'game loop', or specific framework names users might mention.

DimensionReasoningScore

Specificity

Names the domain (2D game development) and lists several concrete concepts (sprites, tilemaps, physics, camera), but these are nouns/topics rather than concrete actions. It doesn't describe what the skill actually does with these concepts (e.g., 'creates sprite animations', 'implements tile-based maps').

3 / 5

Completeness

Provides a vague 'what' (2D game development principles with listed topics) but has no 'when' clause at all. There is no 'Use when...' or equivalent trigger guidance, which per the rubric should cap completeness at 3, and the 'what' itself is more of a topic list than a clear capability statement, placing it at 2.

2 / 5

Trigger Term Quality

Includes some relevant keywords like 'sprites', 'tilemaps', 'physics', and 'camera' that users working on 2D games might mention. However, it's missing common synonyms and variations like '2D games', 'game engine', 'collision detection', 'platformer', 'side-scroller', 'pixel art', 'sprite sheets', or specific framework names.

3 / 5

Distinctiveness Conflict Risk

The combination of '2D game development' with specific terms like 'sprites', 'tilemaps', 'physics', and 'camera' creates a fairly distinct niche. There's minor overlap risk with general game development or physics simulation skills, but the specificity to 2D games with these particular concepts makes it mostly distinguishable.

4 / 5

Total

12

/

20

Passed

Validation

90%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation10 / 11 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

10

/

11

Passed

Repository
administrakt0r/AI-Agents-Safe-Coding-Skills
Reviewed

Table of Contents

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