I will never trash Aliens because it brought me some of the most fun I had in college: Aliens Tag.
A friend owned about a dozen laser tag guns and 3 sensors. We devised a game where we went into one of the campus buildings at night, turned off all the lights but the safety lighting over the stairwells (this building had one main hall and 2 wings and thus 3 separate stairwells and 4 stories plus a basement). People drew cards to determine their roles (including "traitor") and weapons (pistol, rifle, medic or being an alien). 2 aliens (wearing sensors) hid 2 boxes in the building while the 12 marines lay down in the dark on the auditorium stage and played the opening music. When the music ended the marines got up and under a time limit tried to find a bandana that was in one of the boxes (the other box had the 3d sensor a.k.a. face hugger). Marines had to shoot aliens 5 times for a kill and aliens had to touch - body for a kill, limb for a maiming.
I remember one time the guy we voted captain happened to have drawn the traitor card. He divided us into 2 groups and while my group was grumbling about how he stupidly imbalanced the groups we heard screams and ran down stairs to find the entire other team slaughtered by aliens.
ah, good times.