Sqrxz requires fast reflexes and is a simply mindblasting Jump'n'Run puzzle game with high frustration factor. Now ported to Nintendo's GameCube by Oibaf! Read more about Sqrxz v1.0b (GC Game Port)
The guys from Retroguru seem to have some time on their hand and released a GameCube port of Sqrxz 2 - Two seconds until death. If you like very difficult jump'n run games, this might be for you! Read more about Sqrxz 2 v1.00 (GC Game)
Sqrzx 3 by Retroguru is a pretty insane Jump'n Run Game with puzzle elements. Make sure your mind works faster than a thunder and your fingers should be even faster than that. Ported to GameCube by Oibaf, a Wii version exists as well along with plenty of other ports. Read more about Sqrxz 3 v1.05r (GC Game Port)
Fresh from Revision 2015 in Saarbrรผcken/Germany comes the new demo Compofiller v2.0 by Desire. Although the name suggests it's a compofiller it's quite great. Read more about Compofiller v2.0 (GC Demo)
Mama Bear Puzzle by Sebastian Mihai is a direct implementation of the "15 puzzle" game, which comprises a four by four sliding tile area, where one tile is missing. The goal is to restore a configuration where tiles are in order. Read more about Mama Bear Puzzle (15-03-2015) (GC Game)
Cheesetoe by RbR and Skomp is a GameCube game released at Revision 2014. Try to score by closing boxes on the grid. You can either set a side, shift a row/column or throw a bomb per turn. The powerups are located on the grid and you can get them by closing a box at their position. The game is over when every box on the grid has been closed. Be careful: if you still have bombs left when the game ends, you'll loose points! Read more about Cheesetoe (Revision 2014) (GC Game)
Vitali Glitchko by Schaedelproduktion belongs to the possibly worst GameCube demos ever released. First shown to the public at NorthCon Demoverse 2013. Read more about Vitali Glitchko (GC Demo)