Metal Slug - The definitive, side-scrolling bullet hell platformer.
Blasphemous - Blasphemous is a Shooter and Single-player video game developed by The Game Kitchen and published by Team17 for Multiple Platforms.
Mercenary Kings - Mercenary Kings is a wonderful combination of Action-packed Side-Scrolling Run and Gun and Platforming video game by Tribute Games.
Strider - Open-Source Continuous Integration and Deployment Server
Expendabros - Expendabros is an epic amalgamation of all the wonderful elements such as Action, Run and Gun, Side-Scrolling and Platform etc.
Ender Lilies - "ENDER LILIES" is a high difficulty dark fantasy action game that solves the mystery of the kingdom destroyed by "Death Rain".