After much demand, Croteam has added split-screen functionality on the PC version of Serious Sam 3, allowing up to four friends--or arch enemies--to play simultaneously on one monitor. This feature is available for both the co-operative and adversarial multiplayer modes, and is implemented through one person playing with a standard keyboard and mouse setup, and the other three people use
While some PC enthusiasts may make a disgusted face at the thought of using a gamepad, there's no denying that playing a multiplayer or co-operative game with a person next to you is far superior than the whole online experience.
[Destructoid]
