#3831
M.U.G.E.N (AKA: Mugen, MUGEN, 無限) is a discontinued but still very active free 2D fighting game engine with many customizable components. It was developed by Elecbyte, first released in 1999 (for DOS). In 2009, MUGEN 1.0 was released, and in 2013, MUGEN 1.1 came out.

#3781
First, you should know what M.U.G.E.N is. M.U.G.E.N is a free, non-professional 2D fighting game engine that only made for personal use on DOS, Windows and Linux platforms. Its was developed by Elecbyte group using the C language and Allegro libraries, and gives the characters from different ACG (Animation, Comic, Game) a common platform to fight with each other.

#2532
WOW MUGEN (short for World Of Warcraft M.U.G.E.N) is a free simply designed small fighting game developed by a fan player from China using the 2D fighting game engine M.U.G.E.N.

#2462
Bleach VS Naruto (??VS??, BVN for short) was originally an anime characters ported small online flash fighting game, very cool and popular, made by ??(?jian) from 5Dplay Games in Shanghai in 2015. It's inspired from the Bleach x Naruto v3.0 that developed by Elecbyte in 2002 using M.U.G.E.N - another imitation work of KOF.

#1394
KoF All BOSS's Armageddon is a The King of Fighters homemade game released by AppNee, developed using M.U.G.E.N, based on BOSS characters made by Asia anonymous fans player.