Qix? I really like this idea.
I wasn't able to figure out how the line works though.. Is it supposed to only move in the direction the cursor is moving? Sometimes it seemed like I was able to stop the beam in between dots, and other times it would continue and then hit a dot. It just felt inconsistent. I think part of the issue is how the cursor continues moving even when you aren't pressing a button.
I wasn't able to clear level 3. And I only played the Windows binary.