Love the idea of this game, but it is almost unplayable for me. I have several suggestions:
1. The time for each level is way too short! It's definitely somewhere in the range of 2 or 3 seconds. I just lose that first level over and over again. (I think I maybe "beat" one level in the course of 3 or 4 minutes play testing. You should definitely give your players some time to "figure out" the first few levels (at minimum). If it were my game, I'd give them at least a minute, then subtract maybe a second or two for each subsequent level completed until it's down to the timer you've got now.
2. When you "complete" a level, there is no fanfare or acknowledgement, it just moves immediately to the next level. This is extremely jarring, and frustrating! I think you should put some kind of interstitial screen in place, and "pause" on that screen for at least a second before accepting any input to move on to the next level.
3. I think relax mode is neat, but I expected to be able to play those levels. Maybe with a count-up timer instead of count-down? So it could save my "lowest time" for each configuration?