Start by pressing "Play". (Obviously.) Your goal is to get the dot to the red box. The dot will move in a straight line to the red box when you press "Fire". You need to turn the obstacles in a way that they don't block the dot, and that's all. There's 3 levels overall.
This isn't my project. @CertainlyReal made this, as you can see at the top of the instructions. I fixed a glitch in his where it would skip over level 2, made the game a bit harder, cleaned up the coding a bit, and changed the thumbnail so it said Remix on it. So you know... this is a remix.