Toribash
I just wanted to update this because I found a pretty neat zombie survival game.
The Last Stand.
Found it on www.pylonchan.org at school, but it is probably on plenty of other sites as well.
I DID SIR
HE'S MY COUSIN
these games took hours and hours away from me
gemcraft chapter 0
sonny 2

an then which took not so long but is still totally awesome
last stand 2
i suggest that you try these
you find these at Armor Games