2d-games
2D game development principles. Sprites, tilemaps, physics, camera.
64
Does it follow best practices?
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npx tessl skill review --optimize ./path/to/skillValidation for skill structure
Discovery
32%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This description identifies the domain and lists relevant concepts but fails to describe concrete actions Claude would perform or specify when to use this skill. It reads more like a topic list than a functional skill description, lacking the explicit trigger guidance needed for reliable skill selection.
Suggestions
Add a 'Use when...' clause with explicit triggers like 'Use when building 2D games, implementing sprite animations, setting up tile-based levels, or handling game physics and collision detection.'
Convert topic nouns into action verbs describing what Claude does: 'Implements sprite animations, designs tilemap-based levels, configures 2D physics and collision systems, sets up game cameras and viewports.'
Include common user phrases and file types: 'game dev', 'platformer', 'side-scroller', 'pixel art games', or specific engines/frameworks if applicable.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (2D game development) and lists some specific concepts (sprites, tilemaps, physics, camera), but these are nouns/topics rather than concrete actions Claude would perform. | 2 / 3 |
Completeness | Describes the domain/topics but lacks any explicit 'Use when...' clause or trigger guidance. The 'what' is weak (principles, not actions) and the 'when' is completely missing. | 1 / 3 |
Trigger Term Quality | Includes relevant keywords like 'sprites', 'tilemaps', 'physics', 'camera' that users might mention, but missing common variations like 'game dev', 'platformer', 'collision detection', 'player movement', or '2D games'. | 2 / 3 |
Distinctiveness Conflict Risk | The 2D game development focus provides some distinction, but 'physics' and 'camera' are generic terms that could overlap with other skills (3D development, general physics simulations, camera/photography). | 2 / 3 |
Total | 7 / 12 Passed |
Implementation
72%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill excels at concise, well-organized reference material for 2D game development concepts. The table-heavy format is excellent for quick lookup. However, it reads more as a principles reference than an actionable skill - it tells Claude what concepts exist but not how to implement them with concrete code examples.
Suggestions
Add executable code snippets for key concepts like sprite animation setup, tilemap collision detection, or camera follow implementation in a common framework (e.g., Godot, Unity, or Pygame)
Include a brief implementation example for platformer mechanics like coyote time or jump buffering to make the guidance actionable
Consider adding a 'Quick Implementation' section with copy-paste ready code for the most common 2D game patterns
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Extremely lean and efficient use of tables and bullet points. No unnecessary explanations of basic concepts - assumes Claude understands game development fundamentals. Every section delivers information density without padding. | 3 / 3 |
Actionability | Provides useful principles and recommendations but lacks executable code examples. Content describes concepts (coyote time, jump buffering) without showing implementation. Tables give guidance but not copy-paste ready solutions. | 2 / 3 |
Workflow Clarity | This is a principles/reference document rather than a workflow guide, so multi-step processes aren't the primary focus. However, for a skill about game development, some workflow guidance on implementing these systems (e.g., order of setting up sprite systems) would improve utility. | 2 / 3 |
Progressive Disclosure | Well-organized with clear section headers and logical progression from sprites to tilemaps to physics to camera. Content is appropriately scoped for a single overview file. Tables provide scannable structure for quick reference. | 3 / 3 |
Total | 10 / 12 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.
Validation — 10 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
allowed_tools_field | 'allowed-tools' contains unusual tool name(s) | Warning |
Total | 10 / 11 Passed | |
- Reviewed
Table of Contents
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