SuperTux - SuperTux is a classic 2D jump'n run sidescroller game in a style similar to the original Super...
GameStart - GameStart is a software for creating 2D and 3D realtime applications.
Secret Maryo Chronicles - Secret Maryo Chronicles is an Open Source two-dimensional platform game and is using an Open Graphics Library for the best possible graphic design and stock performance.
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.
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.
EDGE Extended - EDGE Extended is an awesome, Arcade, Puzzle-Platform, and Single-player video game developed and published by Mobigame S.