Fable 5.2 runs overnight to build real-time Toronto bird sim with map 7x bigger than GTA6
zeeg · x · 2026-11-12
Developer yegor left Fable 5.2 running overnight on COO, a Greater Toronto Area bird simulator with a map 7x bigger than GTA6, asking it to make the city feel more alive in realtime. The result:
- Living city: realtime weather, traffic, transit routes, and 500+ real-world traffic cams viewable from inside the game
- Public transit: every subway station, bus stop and streetcar stop recreated — enter the subway from the surface, ride trains, fly through tunnels
- Bird pilot: fly to the island airport and hotwire vehicles
Sentry CEO zeeg shared it with praise, showcasing AI agents' ability to autonomously develop games over long sessions.
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