4 Player Coop Action RPG's... any left?

[DueAccident]

On PC; one game that comes to mind would be System Shock 2. Once you patch it to become multiplayer enabled, it's easy enough to set up. If there is someone out there who is unaware of SS2, it's an FPS RPG horror action amalgam.
Can be a serious amount of fun with friends.

 

[EinTheCorgi]

if you have a 360 or a play station 3000! you can pick up tales of vesperia or tales of symphonia both are grate games oh but tales of symphonya is for the ps2 and gamecube/aka most invincible console EVER!