And DOS-Box. GOG.com Masters of Orion 2 and many older games work great on it.

It doesn't really matter if they are though. It means we get "official support" - if something is broken, they are able (and I daresay, maybe even willing !) to look into it.

I've bought some games (older games from years ago) on gog.com for os x, they were always just running wine