I'm having some Jump King flashbacks. I managed to make it to level 7 before I realized that I could rotate using the up arrow as well (even though you had a level stating you could use any of the 4 directions I was still only thinking of left and right rotations). I missed the mouse wheel tip on my first play through as well. I was more concentrated on not dying to the laser lava I guess. I really like the rotation mechanic and I didn't have any issues with input lag, I just suck at later levels. I had a lot of fun dying!