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Team Lumen

Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

Demo video · youtube.com/…

Most self-improvement apps ask you to tick boxes. We wanted the opposite: a game you actually want to open, where the only way to win is to do real things. Bulbu World is a cozy island game. Bulbu, a small glowing lightbulb, lives on a floating island that's slowly being swallowed by the Dim. Your goals become buildings: coding goes to the Blueprint Forge, fitness to the Arena, saving to the Vault. When you do the real thing (solve a LeetCode problem, finish a workout, put money aside, sleep early) you earn Light, the Light flies into that building, and it grows. Skip your plans and the Dim raids your island. Keep showing up and in a few weeks the island is full of towers, lanterns and glowing roofs. The island is basically a picture of your consistency. The main rule is proof, not promises. Coding is checked on your real LeetCode, GitHub or Codeforces account. Steps and workouts come from Health Connect. Other quests need a photo, and Meta's Muse Spark looks at it and accepts it or turns it down (screenshots and random pictures don't count). Things you only self-report give less Light. Everything submitted will be validated by Meta's Muse Spark model. You set a goal by simply telling Elder Lumen, the island's old wizard, what you want to become. Muse Spark picks the right building, asks two or three quick questions and writes a weekly plan you can tweak. Every week Muse Wonder writes the story of your week from what you actually did. With Facebook Login your island follows you to any phone, you can find friends, visit their islands and take on challenges together, and one tap shares your island to Instagram Stories.

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