You control both cars using a single button. Press and hold the button to make the cars move forward, and release it to make them stop.
Collect objects with the same color as the car you are controlling. Avoid objects with different colors, or colors that the opponent car has, as they will reduce your score.
Drive carefully to avoid colliding with objects of different colors or the opponent car. Losing a car will end your game and you will need to restart.
Collecting an object with the same color as your car will increase your score. Objects that match the opponent car's color will not affect your score, but collecting the wrong color can lead to losing a car.
Yes, you can replay levels. Each level has a certain number of circles to pass. Successfully completing a level with all circles collected will unlock the next level.