Drag back from the ball and let go. Arrow keys aim, space rolls.
toroidal bowling: no gutters
Ten-pin bowling on a donut. The lane has no gutters and no back wall: anything that leaves one edge comes back in the opposite one.
Drag back from the ball, aim opposite the drag, let go to roll. The dotted line shows the path, wrapping included.
A slow ball keeps rolling. It can come round the back and hit the pins from behind.
Pins wrap too. A pin knocked off the top slides in at the bottom, and may fall into the others.
Ordinary ten-frame scoring: strikes, spares, three rolls in the tenth.
The little donut shows the same lane as it really is: a torus. Music is blobloblo, from the crab shack 3.5 releases; the buttons below the lane switch it and the sound effects off.