Hello, I was wondering if it is OK to play levels in the reverse order. It may help me out if I play the levels in the reverse order to be able to get a better chance of being able to complete a full no-death run.

Its could help me cuz my android keys is in screen not in phone and its front of button what go to next level on right button so I think can I do it like from time machine to stereo madness I could save time on menu

Technically, you're able to do it in the order you want to. However, it is recommended to do it in order to save tame. Inverse order is also included as it doesn't lose any time. Me, personally, I've been doing 1-21 runs on inverse order to get a deathless Deadlocked. However, not a single run has survived so far. ^^

I guess you can do it in any order as long as Stereo Madness is first since the rules say "timing starts on when you select stereo madness"