Curved-Space Catch

Immerse yourself in any of 30+ wraparound universes and see the space — and your own head and hands — repeating in a crystalline pattern around you. As you move around, your repeating images move in sync. Toss a ball and turn around to catch it as it returns from a different direction. For energetic play, select Game mode to score points based on how many different directions you can throw the ball and then successfully catch it as it returns. Or for a calming, almost meditative experience, select Free Play mode and enjoy the tranquil beauty of the seemingly infinite space. As the ball passes each “wall” you hear that wall's tone; if you let the ball keep going (without catching it) you hear music like wind chimes. Some of the included spaces have spherical geometry, some have Euclidean geometry, and some have hyperbolic geometry. Listen carefully and you can “hear a space's geometry” just from its music!