Super Meat Boy - Let's start with what's the same: Dr. Fetus is still a jerk, gameplay is super challenging but fair, there are tight controls and great levels and you will die. a lot.
Toki Tori - The gameplay in Toki Tori is a blend of two genres.
EDGE Extended - EDGE Extended is an awesome, Arcade, Puzzle-Platform, and Single-player video game developed and published by Mobigame S.
Mari0 - What happens when you mash Super Mario Bros. and Portal together?
Megatroid - Megatroid is a gorgeous, Action-Adventure, Puzzle-platform, Side-scroll, Sci-fi, and Single-player video game developed and published by Triolith Entertainment AB.
Toad Strikes Back - Toad Strikes Back is fan game based on classic Super Mario Bros. titles.