WASD to move, you play as the red cube. Jump from black block to black block to avoid falling off the screen!
The blocks will randomly destroy themselves, so be careful about that. You can double jump, which makes it easier. When a block is destroyed, it will spawn a razorblade that will slowly fly towards you after a short delay.
Finally, some blocks spawn with bombs on them, they have numbers counting down from five. When it hits zero, the block is destroyed.
Whenever a block is destroyed, a new one spawns in a random place on the map! Good luck, and have fun in Block Jumper!