The original Extreme-G is a futuristic motorcycle racing game developed by Probe Entertainment and published by Acclaim Entertainment for the Nintendo 64. In 2001 Acclaim released Extreme-G 3 for the Nintendo GameCube and PlayStation 2, while Similis were working on a Gameboy Advance version too. Sadly the GBA version of Extreme-G 3 / Xtreme-G 3 was cancelled very early in development.
Below you can see a very early prototype / tech demo of “Xtreme-G 3/XG3” for the Game Boy Advance. It was only about four weeks in development and more meant as a proof of concept. It ran at constant 60 FPS on the GBA using a special graphics mode (not real 3D as this would have been to slow).
Thanks a lot to Collect-Thor for the contribution!