2K Games has announced information about multiplayer features for Serious Sam II. The game will allow for full cooperative gameplay for both the PC and the Xbox. Your PC will allow up to sixteen players to play while the Xbox version will allow four.
Serious Sam II will have more than forty levels in multiple worlds with different environments. Players can fight with nearly twenty different weapons and use ten different vehicles and turrets against hundreds of enemies.
You can get your hands on the game this fall.