Eliminate all bumper cars (except one). You may only click a car that—after a rotation—can bump into another car.
A car rotates (clockwise) 90°, 180°, or 270°, then drives as far as empty space is available.
If after a rotation of 90° there is no empty space in front of the car, then the car rotates 180° degrees.
If after a rotation of 180° there is no empty space in front of the car, then the car rotates 270° degrees.
If after a rotation of 270° there is no empty space in front of the car, then the car cannot move.
If after rotating and then sliding over empty spaces the clicked car bumps into another car, then this second car disappears.
You can only click a car that will bump into another car.
There are only three types of moves:
• the clicked car rotates 90°, slides, and bumps into another car
• the clicked car rotates 180°, slides, and bumps into another car
• the clicked car rotates 270°, slides, and bumps into another car
Sliding without bumping into another car is not allowed.
If you are not sure which cars can move, click the "check" button. This will mark each clickable car with a yellow dot.
You win when only one car is left on the road. The text "YOU WIN!" appears at the top.
If you cannot move anymore, the text "STALEMATED: YOU LOST!" appears at the top.
The color of the cars has no effect on the rules.
You can select from 20 challenges. The first 13 challenges are played on a 5×5 board,
the others on a 9×9 board. Challenges 1, 2, and 3 are easy introductions.
You can reset the game to its original randomized layout by clicking the "reset" button.
This game was originally published as the Zillions games "Bump" and "Bump 2" by the same author.