Thank you for your honest feedback! I only had one other person test it, but they were testing it as I was developing it so they likely had the same bias I had in understanding the controls. I made the mistake of reducing the timer at the last moments before submission because I thought it was too easy. Obviously I had just played the game a lot. I should have shown on the screen that the A and D keys could be used for rotation since, I agree, the arrow keys don't make since when using the mouse and pressing the space bar. I'll make sure to get more play testers for my future games.