Hollow Knight - Descend into the Dark Venture down into a beautiful, ruined world of insects and heroes
Dungeons of Dredmor - Dungeons of Dredmor by Gaslamp Games
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.
NetHack - NetHack is a single player dungeon exploration game that runs on a wide variety of computer...
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.
Shattered Pixel Dungeon - A Roguelike RPG, with randomly generated levels, items, enemies, and traps!