Hello, just purchased the game yesterday, best 15 I ever spent! Anyways, a time trial restart option would be extremely useful. Also, I found a glitch in that after unlocking the secret lab, I replayed the game in flip mode and found that when you get to the Gravitron part, you can press enter and it asks if you want to to return to the lab, as if I was in the SUPER Gravitron. I selected it to see what would happen and it transported to to an empty room called "outer space" when I just kept falling and falling, wrapping around the top and bottom of the screen. I guess that glitch could be fixed.