Team Fortress 2: 9 different classes kill eachother nonstop
Painkiller: Kill zombies with a lawnmower
Silent Hill 2: Kill mannequins in rooms full of jam stains
Penumbra: Hide naked aborted fetuses
Serious Sam: Run super fast and blow stuff up
Left 4 Dead: 4 Survivors vs. 4 zombies
Batman Arkham Asylum: Give Batman steroids and make him fight the baddies
Thief: Steal stuff, hide from baddies. Rinse and repeat.
Project Siren: Here's a gun. It does nothing.
Hitman: Thief, but add killing to the formula.
Amnesia: Lovecraft + gaming
Garry's Mod: ARRRGHQQQUAAARRFFFWGGGLLLLABHDAJISDAHKLASD!!!!!!!!!
Painkiller: Kill zombies with a lawnmower
Silent Hill 2: Kill mannequins in rooms full of jam stains
Penumbra: Hide naked aborted fetuses
Serious Sam: Run super fast and blow stuff up
Left 4 Dead: 4 Survivors vs. 4 zombies
Batman Arkham Asylum: Give Batman steroids and make him fight the baddies
Thief: Steal stuff, hide from baddies. Rinse and repeat.
Project Siren: Here's a gun. It does nothing.
Hitman: Thief, but add killing to the formula.
Amnesia: Lovecraft + gaming
Garry's Mod: ARRRGHQQQUAAARRFFFWGGGLLLLABHDAJISDAHKLASD!!!!!!!!!