Powerup Shop - You get special coins for collecting powerups, you can spend them on more powerups.
Easy to use level editor.
Themes - Selectable from options menu. Themes support loading new gfx,snd and levels. A theme can be partial, if a file is missing, it will be loaded from the default theme. You can even mix between gfx,snd and level themes!
Controllable with Mouse/Keyboard/Joystick and WiiMote.
Save and Load games
This game is free for you to download, play, modify and share (under the terms of GPLv3), it comes with the full source code, and with a precompiled binary.