There is EpicMafia, but it is certainly not as good. I miss Slasher! and hope they fix it soon! I am a big fan.
Wolf Quest
Wolf Play
There is okamiden (white wolf game)
www.wolf quest.org
and there is Animal Jam
There is a game called wolf but it only works with old computers.
The only similar anime is Wolf's Rain .
yah... theres endless forest
there is,FeralHeart you can be a lion and a wolf there....
waja's
Give "WOLF" a try. I believe it is the game which may have sparked WolfQuest's creation. :-)