Tekken (AKA: 鉄拳, Iron Fist) is a very classic 3D fighting game series for both arcade and home game consoles, developed and published by Namco from Japan. Its first work was produced in 1994, appeared only on the arcade console at first, and was later ported to home game consoles. As a hardcore fighting game, Tekken is extremely realistic and exciting no matter in action design or graphics rendering, thus occupying one important seat among all fighting games in the world all the time. As we all know, it even spawned comic books and movies.

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.

The King of Fighters (ザ·キング·オブ·ファイターズ, KOF for short) is a classic VS fighting game series first released by SNK from Japan for MVS arcade system board in 1994. KOF was originally launched as a fighting contest organized for the characters from SNK's another two works - Fatal Fury series and Art of Fighting. It has a very high popularity in Asian countries.

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.