First, select a difficulty. 2 is easy, 1 is hard, 0.5 is very hard, and 0.1 is near-impossible. 0 is not functional. This is the number of seconds between spawns of enemies. It also is the number your time will be multiplied by (so if you somehow succeed 0, you will have the high score). Press Space to pivot. (You'll find out how that works very soon.) Avoid any red, and try to get to the right side of the screen as fast as you can. There is a high-score system. The best time starts at 30, and your time will be recorded in it if you beat the best time. Sometimes, an enemy will spawn right next to you. Sorry about that. ;) Also, feel free to copy the sprite (although you should delete everything other than the "Pivot" command). The polished game (when it comes, if it ever will) will be much better, and will probably include a story mode, an endless mode, and more.