It's complicated to say in text so go to YouTube.com and look up How to install screenpacks for mugen and when u find a guy with a koreanish voice he can tell u wat 2 do
There are many mugen screenpacks . Most of which you can get at mugenation.net or mugen-infantry.net . when you find the one you want download from authors site and unzip to your mugen folder.there you go! NOTE: backup your select.def file before unzipping so you can add easier. :)
What is Mugen?
Yo go f*ck urself
mugen is already free
Extract it to your mugen folder
a monster who rapes ppl on mugen
mugen-infantry.net or mugen.en.softonic.com but those are sites i know
how to unlock mugen characters
Mugen Motorsports was created in 1973.
Mugen Power was created in 1979.
Mugen Kigen was created in 2007.