I will be straightforward: this is a game that is for genuine males. While I may be accused of being a masculine sexist, the fast-paced action and savagery of this first-person shooter are likely to be unacceptable to the majority of the women I know.
A multiplayer mode is available, which enables players to collaborate with their peers to eliminate hordes of monsters. That is quite amusing. Nevertheless, my fiancée screamed and immediately pressed Alt+F4 when the first enemy appeared when I attempted to allow her to play Serious Sam 3.