Oops i never answeed your question lol
Yea Polarium is pretty good.
I think that the 30$ i payed for it was a bit much though.
If you can get it for say 20$ and less go for it.
The premise of the game is to line up either black or white horizontal lines by running the stylus over the blocks in various lines that cannot cross.
So after you think you have done it correctly you tap the stylus on the last block in your line and it flips all the selected sqaures.
If 1 square in a horizontal row is a different color it doesn't change.
I think the horizontal row thing is the only comparable thing to tetris.
Otherwise AFAIK this was a rather original idea.
Something fresh