Hah I was going to say fallout. I'm playing FO-tactics atm actually. Turning the tables on autocannon-wielding super-mutants with a 6-man squad (well, two of them are men, the rest bar one are women, and the last is a damn stealthy, hulking great mutant lizard (aka deathclaw) matriarch that stands taller than the armored personnel carrier, and is both lethally fast and carrying about 60-odd grenades, plus a few plasma and incendiary grenades. Mutants usually carry SAW heavy machineguns, grenades and sometimes pack real heavy weaponry like browning M2 autocannons, that the damn buggers fire one-handed like a man would a pistol. Only they try to get in range now and find themselves faced with a barrage of sniper rifle fire, burst fire from a CAWS assault shotgun loaded with slug rounds and both SAW and if needs be anything up to M2 browning .50 cal autocannon or even rocket launcher fire if needs be, plus have to face off with the deathclaw recruit, and usually the first thing a target knows about her being present, is finding themselves torn in half, gored to death on her horns through the eyes, or being pelted with hand grenades. She's a virtual ghost, even right up close, when sneaking, and is FAST, fast enough to get in, rip someone's arms and legs off then run off before anyone can return fire.
I like doom 3 whilst tripping. Dark, disturbing and fucked up, always watching for demons coming to rip off your face.