AstroMenace - Cross-platform and open-source 3D space shooter with spaceship upgrades.
Hollow Knight - Descend into the Dark Venture down into a beautiful, ruined world of insects and heroes
Escape From: A Christmas Tale - An experimental retro game based on CSS Grid Layout
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.
Utilizer Deluxe - Utilizer Deluxe - mobile arcade shooter game mixed with a match 3 genre!
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.