Torus Games for Android
OPPEMENT ALWAYS WINS!!!!!!!
Jeff is one of those rare gems who is mathematically brilliant and also dedicated to spreading knowledge in the face of apathy. Used right these games can segue very inexperienced people to some profound concepts.
They are fun to play. I'm still waiting for Hyperbolic Games to make it to mobile. Hoping to try it without that messy mouse issue.
Computer opponent is amusingly strong. The asymmetry of the Klein bottle geometry (resulting in, e.g., two ranks on the chessboard being half as long as the other three) was not completely obvious but it rapidly became clear after some playing that it was worth keeping track of. Now if only there were also a mobile version of "Curved Spaces"...
by O####:
fun!