i was trying to find out if super smash flash could be played still or maybe ported and i stumbled on this other open source smash clone from a few years ago called project tussle. the dev stopped working on the project but made all the source available online, theres instructions on how to add your own characters in as well. this could be a cool little fighter if it could run on the system but i cant find any info on the pygame code language running on dreamcast. if it cant then its a pretty cool smash clone regardless
https://www.youtube.com/watch?v=BLWmLdxbSeU
source code- https://projecttussle.com/download