Just finished a two hour 4 player coop session. Didn't want to put it down, but life duties called. Quite possibly the most co-op fun I've ever had. We were busting up laughing the entire time. Discovering new spells (and accidentally killing your buddies while doing it) was very intriguing. It seems like there are a LOT of different spells. 8 elements plus 3 ways to cast each spell... and element order seems to matter. This will keep us entertained for quite a while.