Certain older hacks like "Sonic Revolution" & "Project Shadow Demo 4" (both by JohnnyUK I think) don't work properly with the very accurate Kega. They were taylor-made for the less accurate Gens and probably won't work on the new Gens rewrite that St?phane Dalongeville is currently working on either. I don't want to keep using Gens 2.12b in the future just to play such inaccurate Gens-made hacks. (Because Gens itself is inaccurate obviously.) I love the above-mentioned hacks made by JohnnyUK and am hoping he'll update them to be more hardware accurate. Project Shadow wasn't finished but I love it, especially the first levels (night atmosphere with mystic cave 2P music). Can anyone tell me if PS will be finished and these hacks updated? Maybe Johnny himself?