Android users- What game apps do you play?

Just curious as well as hoping we can uncover some cool games that may not always come out on the app ranking lists.

Free apps are very much appreciated, though paid adds are cool too.

Here are some obvious ones to start the thread off:

Angry Birds
iMobsters
Game Dev Story

Thanks in advance!

I have an iPhone but I play Farm Story and it's available for Droid users as well, if you're into that sort of thing.