Sonic Cosmo Fighter - A handful of development leftovers
I cut my teeth on game hacking and research in the Sonic communities of the early 2000's - Area 51, SSRG, CulT - and the Sonic arcade games were always something of an enigma to us. It's been especially exciting to see that these rarities have been finally dumped, including Cosmo Fighter.
I opened the data not expecting to find much and, unfortunately, I was correct. But there are a couple interesting tidbits worth looking at...