Which are, by definition, third person shooters. But we all know JCho here is right with what the OP is looking for.
Heroes & Castles!... For the ranged characters at least. Then there's Invader Hunter, and Star Warfare, added to the ones already mentioned.
Oh yeah those ones are great, I forgot about them. Not sure if 9mm still has a multiplayer community though
I tried playing Max Payne last year and advanced thru a few levels and got bored with it. Is it worth putting the time into? Maybe I'll just start Mass Effect Infiltrator again. .....
I tried to play M.U.S.E, but couldn't really get into it. JCho, have you played M.U.S.E? I'm looking forward to Bug Heroes 2. That should be a good one.
M.U.S.E. wasn't fun. Try Shadow Guardian Unearthed And its more Residant evil, but zombie infection is also fun.