Lots of potential but some of it was wasted on the unforgiving difficulty.
First 50 levels ("Prime galaxy") is somewhat easy to complete. Each level has a "shortcut" or obvious path to complete, and the "falling" mechanic (which is bogus since we're in space) gives plenty of time to react (or just be outright abused in order to complete levels faster).
Shit hits the fan when "par scores" (time and shots) come into play. Trying to achieve each one turns the game from an easy/moderate experience straight to "f***tremely challenging", even considering that they can be achieved in different plays.
The next dimension ("Dimension X") is already hard - it consists of the same layouts from prime galaxy, but with different tiles in order to screw up the player. Even completing the first stages is a pain and to reach par scores on them would be impossible without mad skillz.
Original audio, I always appreciate it. Graphics are OK. The game is well done, it's just the difficulty that is way too high.