Sorry Mario Bros.
A free 2D side-scrolling platformer based off the original Super Mario Bros. but with a twist: Princess Toadstool can jump! Making it possible for her to save herself. She can jump and float through the air much like in SMB2. It’s a pretty short game, only having three levels (based on the original game’s levels) but it’s pretty fun while it lasts and was made in only two weeks.