# Make your agent play the game before it says done (free sample)

> One rule, one playtester skill and a play log template that make Claude Code or Codex test your game with real controls before reporting done.

- URL: https://paperchasewebb.ai/bots/marketplace/items/make-your-agent-play-the-game-free-sample/
- Type: Prompt pack
- Category: Games
- By: PaperChaseWebb
- Works with: Claude Code, Codex, Claude (named in the listing); Plain .md
- Price: Free USD
- Difficulty: Beginner
- Setup time: 5 min
- Time to result: Five minutes to install
- Format: Markdown (.md) file, make-your-agent-play-the-game-free-sample.md
- Version: 1.0, updated 2026-10-25
- License: Personal and commercial use.

## What you end up with

Bugs a player would hit get found by the agent first.

## What you get

- The play-it-yourself rule
- A playtester SKILL.md
- A PLAYLOG.md template

## Who it is for

Anyone building a game with an AI coding agent.

## Tools needed

- Claude Code: runs the playtester skill
- Codex: runs the playtester skill
- Claude: reads the rule in project instructions
- You need: A game your agent is building

Cost to run: Free.

## Sample prompt: Play it yourself (Claude Code, Codex)

```
Play the game using the same inputs a player uses (key presses or taps sent to the game window), not by setting positions in code.
Complete one full round. Write PLAYLOG.md with what you pressed, what happened and every bug.
Fix the bugs, replay, and only then report done.
```

Scripted tests can pass while real controls are broken.

## Free preview of make-your-agent-play-the-game-free-sample.md

````markdown
# Make your agent play the game before it says done

Free sample from Game Dev with AI Agents by PaperChaseWebb. Written for Claude Code, Codex and Claude.

## The problem

An agent can report a game as finished because a test script moved the player through the level. Real players press keys and tap screens. In one public comparison ([source](https://x.com/theSethian/status/2110440063821545479), credit @theSethian), the agent that tested with real controls found the steering was reversed. The faster agent that tested with a script never noticed.

## The rule to add to your agent

```text
When the game runs, play it yourself using the same inputs a player would use (key presses or taps sent to the game window), not by setting positions in code. Complete one full round. Log what you pressed and what happened in PLAYLOG.md. Fix every bug you hit, replay, and only then say done.
```
````

## Worth knowing

- Needs a way for the agent to send input to the game window.

## Questions

**What is in the full pack?** The method, brief template, 16 prompts, five skills, check loops, engine notes and 30 game concepts.

## How to get it

Free sample. Download it directly at https://paperchasewebb.ai/bots/marketplace/items/make-your-agent-play-the-game-free-sample/, no signup.

Seller: PaperChaseWebb Inc., mgmt@paperchasewebb.com