fantinuation

When a group of fans create a game, program, or any thing the fan group appears to like. Only works when the original developers aren't continuing the game.

Guy 1: "Hey, dude, they're doing a fantinuation of Mother 3!"
Guy 2: "A what?
Guy 1: "A fan continuation. They're doing Mother 4!"
Guy 2: "Really?! That's awesome!"