Sonic Riders: Zero Gravity (2008) - MobyGames

Sonic Riders: Zero Gravity is a hoverboard-racing set in the Sonic universe and it is the sequel to Sonic Riders. When four mysterious meteorites crash into the planet, they accidentally activate MeteorTech robots around the globe who go on a rampage.

Sonic the Hedgehog (video game), Nintendo

Sonic CD, Ultimate Pop Culture Wiki

Language is Japanese. Tested & fully working.

Nintendo Wii Sonic Riders Zero Gravity SEGA 2008 Japanese Games Tested Genuine

Mario & Sonic at the London 2012 Olympic Games, Nintendo

Sonic Riders (2006) - MobyGames

BFRIS Zero Gravity Fighter Combat (1999) - MobyGames

Sonic Rush, Sonic Wiki Zone

Sonic Riders Zero Gravity Sega Dreamcast (2008) by SonicLoud1213 on DeviantArt

Sonic Riders: Zero Gravity Review - IGN

Developed by SEGA.

Sonic Riders Zero Gravity 2008 Sony Playstation 2 PS2 Sega PAL Complete

Sonic Riders: Zero Gravity - PlayStation 2 [Pre-Owned] – J&L Video Games New York City