# Save System Patterns

> Define reliable persistence boundaries, save formats, recovery behavior, and migration policy.

- **Type:** Skill
- **Install:** `agentstack add skill-mrcalderon3d-everything-game-dev-code-save-system-patterns`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [MRCalderon3D](https://agentstack.voostack.com/s/mrcalderon3d)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [MRCalderon3D](https://github.com/MRCalderon3D)
- **Source:** https://github.com/MRCalderon3D/everything-game-dev-code/tree/main/skills/engineering-common/save-system-patterns

## Install

```sh
agentstack add skill-mrcalderon3d-everything-game-dev-code-save-system-patterns
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Save System Patterns

## Purpose
Define reliable persistence boundaries, save formats, recovery behavior, and migration policy.

## Use When
- the game needs persistent progress or settings
- save corruption risk exists
- schema changes are likely

## Inputs
- state ownership map
- progression model
- platform limits
- backward-compatibility expectations

## Process
1. identify what must persist and when
2. design versioning and migration strategy
3. handle partial writes, invalid data, and fallback behavior
4. separate runtime objects from persistent data representation
5. define tests and release gates for save compatibility

## Outputs
- save model
- migration strategy
- error-handling policy
- save QA checklist

## Quality Bar
- makes ownership, state flow, and failure behavior explicit
- improves maintainability without over-abstracting
- supports testing, debugging, and safe iteration

## Common Failure Modes
- coupling systems through hidden globals or timing assumptions
- writing logic that is hard to test or debug
- optimizing the wrong layer before measuring

## Related Agents
- technical-design-lead
- gameplay-programmer
- qa-lead

## Related Commands
- save-system-review
- tech-design
- verify

## Notes
- Keep this skill aligned with the relevant rules layer and current project documentation.
- If engine-specific constraints materially change the workflow, hand off to the matching engine skill or engine-specific reviewer.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [MRCalderon3D](https://github.com/MRCalderon3D)
- **Source:** [MRCalderon3D/everything-game-dev-code](https://github.com/MRCalderon3D/everything-game-dev-code)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-mrcalderon3d-everything-game-dev-code-save-system-patterns
- Seller: https://agentstack.voostack.com/s/mrcalderon3d
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.