The website was created by That Man and Blade Art in 2009 under the name The Chronicles of Mugen, primarily serving as a warehouse to 'limit the depletion of mugen resources' by archiving as many creations as possible, though it has since formed into its own community with the introduction of forums and other social features.

Content hosted on the website is not necessarily the original version, despite stating that it is, which is particularly notable with stages as the background music bundled with the stage is often different from what it was originally released with. Certain content on the site is not safe for work and is typically marked with an label, so viewer discretion is advised. The MUGEN ARCHIVE is known for its collection of hard-to-find characters and stages that most other warehouses do not have, with the added bonus of them being hosted on their own server. Unregistered users are able to browse the warehouse and forums in addition to having access to file downloads below a certain size, past which registration is required to increase this limit or remove it entirely, with restricted users being referred to as 'leechers' downloads also become unavailable to these users during what the website calls a 'community growing event', which usually takes place over the weekend. The MUGEN ARCHIVE (formerly known as The Chronicles of Mugen) is primarily a collaborative M.U.G.E.N warehouse, where all members can upload, rate and comment on content, though it also features a forum, chatbox, and wiki.

Mugen archive 18+