Earlier quoted context omitted.
One of the funny implications is that many 2D video games implicitly have toroidal worlds. This is reasonable for something like Pacman, but many games with overworld maps (SNES RPGs like Chrono Trigger, for example) implicitly have toroidal planets due to the navigation.
Someone (smarter than me) should program a Pacman clone that takes place on one of these tori.
pacman already takes place on one of these tori