MUGEN 1.0 can be downloaded from our website for free. The actual developer of the free software is DB Ultimate Mugen 2007 v2. The software lies within Games, more precisely General.
From the developer:
M.U.G.E.N is a 2D fighting game engine that is enables you to create commercial-quality fighting games. Almost everything can be customized, from individual characters to stages, as well as the look and feel of the game.
The majority of content created for M.U.G.E.N tends to be distributed as individual characters, stages or motifs. Assembling a game is as simple as downloading the content of your choice, and configuring M.U.G.E.
You may want to check out more software, such as Extra Mug Shot Sticker, Dragon Ball Z : Extreme Mugen or Bleach M.U.G.E.N 2010, which might be similar to MUGEN.