Real AI agent use cases, with sources and setup prompts

Ship a 2.5D platformer built with Opus 5.5 and measure who plays it

Tidebreaker is a 2.5D platformer with a boss chase whose maker says the puzzles, graphics and game code were built with Claude Opus 5.5. He shared the first-day player numbers.

$4 in / $20 out per 1M tokensWeeksIntermediateSource linked

Source

@Atlas_fomo on X · 2026-10-14

Written in our own words. Credit to the original author. Link checked 2026-10-21.

What they did

Tidebreaker is a 2.5D platformer with a boss chase whose maker says the puzzles, graphics and game code were built with Claude Opus 5.5. He shared the first-day player numbers.

Result (as claimed)

762 people played it in about its first day, with an average session of 1 minute 41 seconds.

Tools they used

Claude Opus 5.5

Cost: Claude Opus 5.5: from $4 in / $20 out per 1M tokens.

Set it up

  1. Write a one-page brief

    Describe the app in plain words: who it is for, the 3 core screens or actions, and what "done" looks like.

  2. Start the project with your agent

    Open Claude Opus 5.5 and paste the brief. Ask it to propose a stack and a file plan before writing code.

  3. Build one slice at a time

    Ship the smallest working flow first, run it, then add features one by one. Commit after each working step.

  4. Test it like a user

    Click through on desktop and phone. Ask the agent to add basic tests and fix anything that breaks.

  5. Check security and ship

    Keep keys in environment variables, check auth and database rules, then deploy and share the link.

Copy the full setup prompt

Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.

You are helping me set up this AI use case end to end in Claude Code.

Goal: Ship a 2.5D platformer built with Opus 5.5 and measure who plays it
What the original author did: Tidebreaker is a 2.5D platformer with a boss chase whose maker says the puzzles, graphics and game code were built with Claude Opus 5.5. He shared the first-day player numbers.
Reported result (as claimed by the author): 762 people played it in about its first day, with an average session of 1 minute 41 seconds.
Source: https://x.com/Atlas_fomo/status/2110297987754635734
Tools they used: Claude Opus 5.5
Category: Vibe coding & apps

Please:
1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like).
2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure.
3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data.
4. Finish with a checklist to run it again next time.

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Guides for this use case

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