In Bump Marbles, players will use the arrow keys on their keyboard to move their marble around the game board. The goal of the game is to push the other marbles through the tubes and into the machine. Players must be careful not to let the marbles fall off the edges of the board, or they will lose. To earn three stars, players must successfully push all of the marbles into the machine. Players must also be strategic in their movements, as they will need to navigate the tubes and avoid obstacles in order to successfully complete the level.