Far Cry: Blood Dragon

The most 80's FPS you will ever play.

This took the insanity of Far Cry 3 to a whole different level. I'm still waiting for Blood Dragon 3: Vietnam War 2, Ubisoft!
When the trailer for this first came out, people thought it was a parody. Then people played it, and it was amazing.
@atroyn I found it amazing that this game was ever created. It was occasionally /too/ pleased with itself for being self-aware, but it was mostly hilarious and a blast.