It pulls all of the "classes" from Id's previous games. You can be "doom" , "slipgater" , "stroggos" , or "arena" . All 4 have the weapons of their respected game title, which makes each class distinct and deadly in their own way. Fun fun :D
It got boring towards the end due to endless repetiveness.
Walk in room.
Turn on matrix junk (i can't even remember what it's called now)
Shoot everybody in the head
Repeat for next room
And so on.
But who says carnage isn't fun for a while :D
generations is awesome. a must download for anyone who slightly likes quake 3. i love generations. it'll be fun to see how skilled players choose a class and excel :)