Mushroom Kingdom Fusion is described as '(as yet unfinished: v0.7) non-profit fan-made platforming video game that is based on Super Mario Bros. It is a Crossover with elements, characters, and settings from a multitude of other video games'. There are eight alternatives to Mushroom Kingdom Fusion for a variety of platforms, including Windows, Linux, Mac, Android and Chrome OS. The best alternative is SuperTux, which is both free and Open Source. Other great apps like Mushroom Kingdom Fusion are TheXTech (Free, Open Source), Super Mario Bros. X (Free, Open Source), reTux (Free, Open Source) and Super Bombinhas (Free, Open Source).
Super Mario Bros. X 18.104.22.168 is a massive Mario fangame that blends elements from Super Mario 1, 2, 3 and World. It has many power ups, such as the Ice Flower, Hammer Suit, Tanooki Suit, Kuribo’s shoe, The Billy Gun, and Yoshi.
Tux is just getting ready to go fishing when all of a sudden, he receives a message. The message states that his home, Icy Island, has been taken over by the Snow King, and a new Fish Tax will be imposed. Tux is furious! How dare the Snow King take away his fish?!
Mega Mario is a Super Mario Bros. 1 clone. It features everything the original features - with better graphics, higher resolution, smoother movement and new levels. The story of Mario and Luigi continues, in old-school style.