Game: Nun Attack

Never have I seen a game more on the nose with the whole dark vs. light thing than Nun Attack. In it, you control a league of nuns tasked with protecting the world from classic enemy archetypes like wolfmen and vampires. You'd think in such a scenario that the intangible powers of good would be the nuns' weapon of choice, but instead they opt for a massive arsenal of guns and other such weaponry. Because, you know, video games.