GAME
FRACT OSC
A musical-exploration puzzle in a synthesizer's ruins
Phosfiend Systems · 2014-04-22 · ■■■■□ 4/5 · 7.5/10
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In three lines
FRACT OSC is a puzzle / exploration puzzle game released by Phosfiend Systems in 2014.
Puzzlebyrinth scores it 7.5/10, with a difficulty of 4/5. A musical-exploration puzzle in a synthesizer's ruins
Its core mechanics are Environmental Observation / Contraptions.
Our Review
A first-person musical-exploration puzzle set in a vast synthesizer-built ruin, where you actuate glowing nodes and sound rigs to wake dormant machinery and music back to life. There's almost no instruction; working out what is even interactive is itself the puzzle. Phosfiend Systems, 2014, winner of IndieCade's audio design award.
Mentions across our columns (6)
Puzzle Soundtracks（4）
- 2026-08-15 · DoremiSoundtrack: Kine — engineering a jazz you cannot play wrong
- 2026-07-24 · DoremiSoundtrack: The Turing Test — one motif that keeps asking, human or machine
- 2026-07-23 · DoremiSoundtrack: Vessel — Water music that assembles itself as you solve
- 2026-07-11 · Doremi · 10 mentionsSoundtrack: FRACT OSC — solve the puzzle and the music grows back
