Keys

Left player

W = up; S = down; D= freeze paddle; A = reset paddle; Spacebar = toggle AI

Right player

UpArrow = up; DownArrow = down; LeftArrow = freeze paddle; RightArrow = reset paddle.

The ball shouldn't ever start at perfect vertical, if it does get to perfect vertical it will eventually ping out of bounds, giving someone a point and resetting.

More information
StatusPrototype
PlatformsHTML5
AuthorTwixiduster