This is part of my Steam Challenge Series (the full list is here).
My one-line summary of this game would be:
Play Pong at a rave. Acid trip sold separately.
Seriously, it is a polarising game. You will either love it or hate it. I have neither the skill nor the patience to love it.
I think the feature that tipped me into the hate camp is the fact that at some times, there are background objects or animations that – due to their colour – hide the beats you are trying to memorise. Combine that with the strobe-like flashing and you lose track of the beats very easily. Speaking of which, definitely avoid this if you are affected by epilepsy or similar afflictions. This game can easily induce seizures in certain people.
The music seems pretty good if you are into chiptunes, though. I would rather just listen to the soundtrack than play the game.