Navigate through a series of gates and cubes, avoid the negative gates and go in the positive ones and merge to the same cube, but avoid the cubes with different number, you can't merge with them.
You must arrive at the end of level with a number that is greater than or equal to the level's objective.
With fast reflexes and strategic thinking, you must outwit the negative gates and keep their number from reaching zero in order to make it through each level and ultimately win the game.