I finished my compo entry, “Downbeat“.  I could probably add some extras with the extra time, but as usual I’m afraid about doing anything to break the game so close to the deadline.

So in the game, music is your weapon.  As you move around the maze, four-beat patterns are played on the left side of the screen.  Duplicating each pattern spawns musical notes that will attempt to home in on enemies to damage them.  The more accurate your rhythm is, the stronger the attacks are.  Touching an enemy results in a game over, while reaching the portal wins the game.

(There are a few issues with enemy spawning though.  It’s so randomized that in some rare cases, you can end up with too many or not enough enemies.  So if the game is either too easy or too difficult, try playing a second time to see if it turns out better.)