I'm pretty sure my eyes glazed over when Super Mario Bros. Crossover first came to my attention. Oh, I could understand why the fan-made creation might appeal to some gamers, but it didn't appeal to me--at all.
Then I saw the following video, which highlights the impending inclusion of Blaster Master's Sophia the 3rd in this (seemingly) ever-evolving title. (He/she/it supposedly will be added to the game later this month.)
If you're as behind the times I am and you have yet to play the fabulous concoction that is Super Mario Bros. Crossover, check it out here.