Sonic Riders: Zero Gravity

Sonic Riders: Zero Gravity was released in Japan and is a hoverboard-racing video game published by Sega and developed by Sonic Team in cooperation with NowPro. It is the fifth racing game in the Sonic the Hedgehog series, following Sonic Drift, Sonic Drift 2, Sonic R and its predecessor, Sonic Riders.

Controls
To play with the Wiimote go to "Config" -> "Gamecube" and set "Port 1" to "Nothing". Refer.

Reflections
Water reflections in the Aquatic circuit and on character models are not drawn properly. This was updated in recent revisions, but a remaining issue of overly dark underlying models persists. Refer.

Sound
With FPS limiting/Audio Throttle, after a few minutes of play normal BGM & effects mix with creepy sounds. Apparently this is less severe in later revisions. Refer.