Riptide GP2 offers various control options, including tilt steering, touch controls, and gamepad support. Players can customize these settings in the options menu to find the control scheme that works best for them.

To unlock new watercraft in Riptide GP2, players need to complete races and challenges to earn in-game currency. Once sufficient currency is accumulated, new watercraft can be purchased in the shop within the game.

Improving racing performance involves mastering drift boosts, performing stunts, and utilizing shortcuts. Players should practice timing their boosts and learn the tracks to identify the best areas for stunts and shortcuts.

To perform stunts during a race, players should jump off ramps and use the control scheme to execute tricks. Stunts can be initiated by tilting the device or using button inputs, depending on the control preferences set in the game.

Earning better rewards in Riptide GP2 can be achieved by following these steps: 1. Participate in higher-tier races, which offer more significant rewards. 2. Complete challenges that unlock bonuses. 3. Use the best watercraft available for performance advantage. 4. Aim for first place to maximize your winnings.