Why do you, SEGA have to use GameGuard???
Please use something that works on SteamOS, like Denuvo??? Denuvo Anti-Tamper is the current de-facto standard for securing DRM schemes on modern titles.
plz sega I really love the whole Phantasy Star Franchise. I don´t know how many hours I played it on my DreamCast.
Best Regards. //rZn