
Mostly due to Mugen's awesome visuals, they still aren't boring to watch.
It also spawned a wave of gameplay videos on YouTube around the late 2000s-early 2010s, but still on-going to this day. And speaking of these characters, not a single copyright notice has ever been filled into them, not even those from Nintendo and their infamous overprotection of their IPs.
Without the Mugen community, we wouldn't get impressive characters like ShinRyoga & NeOaNkH's Mario.There is also also an unofficial wiki dedicated to it that also showcases content from other people, named Mugen Database. It created a large community and even websites for to that engine, resulting in a big amount of content being made for Mugen.Newer versions of Mugen are still supported by operating systems as old as Windows XP (which came out in 2001), due to the application being low-end.Can be played in HD widescreen for some stages and at native 60 FPS, which is impressive for a game engine that hasn't been updated in a very long time.It's capable of displaying high-quality effects and outputting HD sounds, and the graphics still aren't old nowadays even when compared to a modern PC game. Extremely visually appealing thanks to how powerful Mugen is with the use of SDL.Just place files in their specific folders and edit the configuration files with the notepad application. Even though it might look complicated, it's also easy to understand how to setup the engine and add new stuff on it.
mod that converts the gameplay into a Smash-alike one, 4v4/3v3 matches, Tag Team System, and a 4GB patch used to keep the game from crashing.
Also, some absent or additional features of Mugen have been remade/made by the community. This also allows funny joke characters to be made, like the internet meme Shoop Da Whoop whose only attack is to fire a large and deadly laser. Content can be made in different resolutions and amounts of colors, allowing people to "rush" their own characters before publishing them online. Practically no "limits" for every type of content. In fact, it is possible to recreate a official fighting game, like "JoJo's Bizarre Adventure: Requiem" which adds a bunch of characters from Parts 1 - 6 and recreates them to the Jojo style. Many screenpacks also have hundreds of slots for characters so players can add a plenty of them in one game. It also acts as a fighting game that you can customize by adding any character, stage, screenpacks and more. With that characters won't have to get average moves like simple punches or projectiles! Also completely customizable, so people can program new moves, Hyper sparks, other effects, etc. The simplicity has been further expanded with an unofficial program called Fighter Factory Studio. About anybody can create characters, stages and screenpacks thanks to how easy it is, and it's still extremely simple to deal with coding.