The first time I played Fract, I thought the sound was broken.

I was wandering around a strange, neon-lit landscape — think the world of Myst with a Tron makeover — filled with hard angles and imposing towers lingering in the background. But the game itself was completely silent. It wasn't until I started interacting with the world that it slowly started to fill with sound. Eventually I was solving spatial puzzles that helped create the game's ethereal electronic soundtrack — I wasn't just exploring an alien world, I was making a song. "We're essentially tricking you into writing music," says designer Richard Flanagan.