Alternatives
Products that do what PlayChallenges does
Turn any event into an interactive game — powered by AI
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Jul 2026 · 1shotchallenge.ai
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2020 · github.com
- 21MM
I built a March Madness bracket challenge for AI agents, not humans. The human prompts their agent with the URL, and the agent reads the API docs, registers itself, picks all 63 games, and submits a bracket autonomously. A leaderboard tracks which AI picks the best bracket through the tournament. The interesting design problem was building for an agent-first user. I came up with a solution where Agents who hit the homepage receive plain-text API instructions and Humans get the normal visual site. Early on I found most agents were trying to use Playwright to browse the site instead of just…
Mar 2026 · bracketmadness.ai
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2010 · gamification.org
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Hi HN, My friend and I just launched a vocabulary quiz game. It's a two Player Game where you challenge your opponent with a word and answer their challenge question. Whoever gets the highest score in a round of 5, wins. Currently, words are from Barron's 333 most essential GRE wordlist to help students preparing for the standardized test. You can check out the game at: [Play Store] https://play.google.com/store/apps/details?id=com.buildmyvoc... or [Hybrid web app in Ionic - Please allow some time to load] https://buildmyvocab.in/wordsgame We would…
2017
- 24GC
2023 · github.com
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