Board Thread:M.U.G.E.N Help/@comment-14444305-20150701214226/@comment-10227639-20150701215002


 * Need to have the necessary files (pretty obvious).
 * Need to be balanced.
 * Need to be playable (as in, not have a lot of glitches and overpowered attacks).
 * Need to be possible to win against.
 * Need to be good

All of those are my opinion, along with what Plas posted.