If you want to build it you'll need a working copy of MCL and a PPC mac. The requirements may be slightly narrower than that. SK8 had some low-level bits that might rely on some details of the Mac System version or hardware. I don't rememberenough of the details anymore, but you might need to try a few different PPC models and system versions. System 7 or 8 is probably a decent bet, as is any mac hardware that was shipped with it.
If you want to build it you'll need a working copy of MCL and a PPC mac. The requirements may be slightly narrower than that. SK8 had some low-level bits that might rely on some details of the Mac System version or hardware. I don't rememberenough of the details anymore, but you might need to try a few different PPC models and system versions. System 7 or 8 is probably a decent bet, as is any mac hardware that was shipped with it.