The PvZ is the standard 9 levels in the demo, I think.
The best part about Angry Birds is that you don't have to be connected to the internet to play it.
There's also a Fishdom game and Return to Atlantis (both match 3 types), both demos, but you can play a while before hitting the end.
Try Entanglement out. An interesting puzzle kind of game even though there's only one free board, it seems that it might be different outcome every time.
(and yes, I was the OP of one of the old threads about this here at CAG, so super internet millionaire props to me)