Okay, we're all updated again. Friendly reminder: Remember to specify which OS you're testing games on. If nothing is listed, Windows will be assumed.
Holy crap, you're right. I just tried every manifest available, and every one of them works great until you try to activate Zone. That really sucks. I'll remove it from the wiki page when I update the list later tonight; thanks for the info.
By the way, talking about games that could be DRM'd that are on the list, is Panzer Paladin really DRM free? I tested it a while back, but forgot to mention I couldn't make it work without Steam, but I don't know if I missed something.
This I don't know, since I don't have the game myself, but I'm very interested in getting it, so I'd love a definitive answer.