Single-Player and Instant Action works like it does on my original disc, but apparently this (GOG) version does not have functional Multiplayer that is compatible with GameRanger like the original disc version is, I have read this in a forum and tested this by selecting "Internet" when choosing Multiplayer in-game. I know GOG (more like Activision) will not update or include additional features for this version, but one can dream. P.S. I broke my moral rule in not supporting Activision, but since the free versions are not working anymore (interestingly) and I've been wanting to play Armada with my family, mostly my nephew I sadly had to break that rule just to try to play multiplayer. But since finding out that this version is not compatible with GameRanger, I feel like I broke my rule and wasted money for nothing.