Red Faction: Guerrilla

Corollary: playing Red Faction: Guerrilla while drinking is amazing. The low penalty for dying (you restart at a safehouse with full ammo), and the fact that death is usually spectacular (e.g. a tower falling on you), conspire into something that's really incredible with even just a bit of artificial suspension-of-disbelief.

Progress: Just walked through a building in a mecha suit. Whoa!