This is based on an unreleased game of mine which I never finished, which itself was based on the old Macintosh shareware game Diamonds. There's also some inspiration from Messhof's Punishment: The Punishing and VVVVVV.
Guide this constantly bouncing Pong-like ball out of this dungeon-like environment. Break through the orange blocks (above the start) and blue blocks (below the start) and avoid the purple objects. You must be the same colour as the block to break it.
This thing is kind of dry and could probably do with a more interesting design, but w/e.
Left, right: Move.
Up, down: Speed up or slow down, depending on your current velocity.
EDIT: Endless respawn bug and some sticky wall bugs fixed.