General
At first it took me a while to get used to it, I felt the learning curve was steeper than I'd like it to be. Maybe there could be more tutorial levels, 2-3 for each block type? But after first 5min passed, than it's been all good.
What confused you?
How to use all block types. In every level, I've always put other blocks out of the way and used only square blocks. It's pity that the game allowed me to do that, there could be some levels where the player would've to use different blocks to reach the goal.
What did you like?
The whole concept, it's something new, that's plus. Than music, option to make own levels and share them(even though, I haven't used it), score table - compete with other players.
What did you dislike?
Graphics could be better, it's not I dislike it, just could be bit more fancy(don't know if it's the correct word<img src="smileys/smiley1.gif" border="0" align="middle" />)
Buttons could be not that flat, pointing hand could be shadowed etc. - something like that, add more detail.
But that all isn't important, I just wanted to write here something, you asked for it<img src="smileys/smiley1.gif" border="0" align="middle" />