As already said...
The game is based a lot on memorization. I'm one of those players who doesn't mind twitch gaming but I do hate being required to memorize a level in order to complete it. The speed wouldn't be as bad if maybe you could have more time to react. I respect sprite graphics but they don't deserve too much praise. The sound also fit in nice, but music was a little repetitive after a while though.
One thing I get sick and tired of though, are people who say "You never made a game so you shouldn't review it/give it a bad score/etc. because you don't know the effort that goes into them." That arguement doesn't make sense, imagine what would happen if movies or games could only be reviewed by the developers themselves? Reviews are there for a reason, even if they aren't from a game maker. People make and submit games for the general audience to enjoy, they don't submit them to be critiqued by a select few fellow creators. In other words, saying that people who don't develop themselves have no right to review is utter BS, as they still enjoy or hate the title just as much as any other person