The AI builds. You break. SIRTET flips the falling-block puzzle: the machine tries to clear rows, while you move and rotate pieces to bury it. Play SIRTET on desktop: https://playmcp.io/g/g_hxx3yDS0 This gameplay overview shows the controls, the back-and-forth struggle, and both endings. Fill the field and the human wins. Let the machine erase every brick and the AI wins. Running out the song without either outcome is a draw. Built with PlayMCP for #FirstMusicGame. Original music: “AI-logic”, supplied by the game creator. English narration: Supertonic 3. Generated robot performances and original game visuals. Footage is captured from the local game engine with scripted legal inputs. The human run uses the published seed19; the AI-ending run uses a different sequence (seed88) with the same rules, clearly labelled SEEDED DEMO. The public game was not changed for this video. The labelled rewind is an editorial replay. The presentation intro also tests a Tesseract editable-project roundtrip; it is assembled downstream with FFmpeg, not rendered by the converter. CHAPTERS 0:00 You are the sabotage 0:06 What is SIRTET? 0:14 Your turn, then its turn 0:23 Rewind the intervention 0:32 Human ending 0:41 AI ending 0:50 Music and atmosphere 0:58 Can you bury the machine? #SIRTET #IndieGame #MusicGame