GamesKiko Llaneras @kikollan2026-09-250:18

UMBRAL game made from pure code

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kikollan built the browser game UMBRAL almost entirely in one shot with Opus 5.5 (Extra), written from scratch in vanilla HTML/JS with code-generated visuals, music and sound.

Creator's brief97 chars

haz algo espectacular, mecánicas tipo Hades e inspirado en «Another World» de 1991. ¡Se creativo!

Source: the creator's reply under the post. Kept in its original language, unedited.

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Original post: https://x.com/kikollan/status/2103578336018505763

All works are open data at GitHub · awesome-opus-5.5-video.

Model attribution is as stated by the creator and was not independently reproduced. View counts are a snapshot from 2026-11-13. The work belongs to its creator; DM @GoSailGlobal on X for corrections or removal.

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