Developer builds multiplayer game overnight using Claude Fable 5

Wesley (@wescld), a Brazilian software engineer, has shared how he built a top-down, Counter-Strike-style multiplayer game in a single overnight session using Anthropic's frontier model Claude Fable 5. In a late-night test, the model turned a prompt into online multiplayer, a buy menu, a scoreboard, a kill feed and a deployment; by the next morning he had added four maps, three game modes, a tutorial, bots and account-based saved progress. Audio and sound effects were generated with ElevenLabs. The entire build was completed in one session and shared as a hobby project.