Queueue

Do you think you can dodge all the traps while you're moving in the future? Even a simple level can become a brain-teaser when your next two moves have already been chosen... No walls, no hidden tricks, just your mind pitted against a few tiles floating in the interminable void. As you move tile-by-tile to reach the goal be careful, stepping off the path or into spikes will send you right back to the start of each level. 

Every level, you are shown every detail from the start. If you pulled out pen and paper, you could solve it before you make a single move. Spikes, doors, and portals all block you from reaching your goal. But, if you can keep track of where your moves will take you and when you will arrive there, you will sail through the levels without a care in the world.

Or crack out the level editor and create your own tortuous torments to inflict upon your friends. The very same tool which the campaign was crafted with is there for you to use to make art or evil as you please.