One night, the console stayed on a second too long. The gravity-control unit within the game—the Arks of the Cosmos—synced with the PS2’s internal clock. Suddenly, the room began to vibrate. The "Save" icon, a spinning gear, didn't stop. It spun faster and faster until the living room floor lost its grip on reality.
Both Heroes and Babylon campaigns finished, providing access to the full ending. Sonic Riders Zero Gravity Ps2 Save File
If you prefer a physical solution to avoid manual file transfers, you can find official Sony MagicGate memory cards pre-loaded with complete save data for this game and others in the series. One night, the console stayed on a second too long