Ballion is based on the C64’er game Crillion. For the WII version you need a gamecube game controller. Sound is not yet supported in this version. Hardware acceleration is not used, the PS2 version looks better. To save the game state, you need a gamecube memory card in slot B. You can load ballion with the Twilight Hack.
Thanks to http://www.dcemu.co.uk for the news.