The music. Dysentery.

Physical and psychological torture. Death. Voice acting. The absurd difficulty and futility of trying to keep someone happy. It's just too real.

The whole game. Trip. Drinks. Brass bull.

Character models. NPC behaviors. Voice acting. Animations.

Building and arming a large troop of NPC survivors. Voice acting. Frank West.

The multiplayer. Big Team Battle and the potential for insane things to happen. Betrayals. Playable Elites.

Violent wipeouts. Dialogue.

Character creator. Voice acting. Multiplayer siege mode. The kick attack. The pure realism of it all.

Character creator. Team creator. Full-court shots.

The character creator. Funny costumes.

The character creator. Algol.

All the Yakuza games could go in this spot. Rare instance of a game that is trying to be funny and is also incredibly god dang funny.