Serious Sam shifted into a whole new dimension with co-op multiplayer, huge outdoor spaces and huge end of level bosses.
Playing with a few friends, the atmosphere of watching your team mates far away in the distance, launching salvos of rockets up at some giant monster, which is even further away in the distance, while running non-stop from hordes of screaming enemies, to the tune of mad techno beats and endless explosions has yet to be beaten in my mind.
I remember playing for years with a few friends at Serious Sam the 2nd encounter (to not be confused with Serious Sam 2), we could play in 4 with just one computer and 2 monitors (you configure it in window mode, and you put the very wide window in the middle of 2 displays).
it was a lot of fun, especially the last levels where the horde was immense (and the computer didn't freeze)
Playing with a few friends, the atmosphere of watching your team mates far away in the distance, launching salvos of rockets up at some giant monster, which is even further away in the distance, while running non-stop from hordes of screaming enemies, to the tune of mad techno beats and endless explosions has yet to be beaten in my mind.