Castle Story (favorite)
Tribez
Tribez and Castles
Ice Age
My Singing Monsters
Jurassic Park (before they got greedy)
Bejeweled
Started Farmstory2, will see.
Mainly CS, though, limited time available.
Also, it would be nice to be able to play CS offline, like Tribez and Tribez and Castle, because Wifi may not be always available.