OpenBOR – Ultimate 2D fan-made side-scrolling game engine

OpenBOR (short for Open Beats of Rage) is a free, open-source, sprite-based 2D side scrolling video game engine (not a console emulator) for Windows, Linux, Android, PSP and WII platforms. Users from all over the world have used it to create a lot of interesting Doujin games based on Double Dragon, Streets of Rage, Final Fight, The King Of Fighters, Street Fighter, Metal Slug, and more.