Today, Dorkly had a list of 6 Great Homemade Games You Need To Know About and the one that stood out to me was Super Mario Bros. Crossover.
It is exactly that, Super Mario Bros. with a bunch of other classic Nintendo characters that you can play with to get through the game (like Mega Man, Samus, Link, ect…) check it out, really great homemade game!
Also, the website that promotes the Super Mario Bros. Crossover game is called Exploding Rabbit:
Kind of looks like Peanut Chew!
Exploding Rabbit also has a bunch of other cool games, check them out!