Fan game

A fan game is a game created by the fans of a work that is explicitly based on said work. In terms of the Super Smash Bros. series, this results in low-budget games that imitate the gameplay of the series, while simultaneously allowing fans to create and use characters and stages without having to hack an existing game. Fan games tend to be created in environments such as Flash and as a result, are almost exclusively sprite-based. Although the games often feature trademarked characters, settings, music, and other such aspects, their lower production values and presentation causes fan games to be considered legal under parody or fair use laws.