I'm not liking my chances on this one, but as of tonight (after 1–2 months without issue) I am getting constant color palette glitching like so: See the bottom-right summary panel: Behold many icons (most notably under Masonry, Pottery, Construction): Of note, the icons change periodically, see the following short video capture: https://i.imgur.com/kIBA9e8.mp4 (apologies for the odd cropping of the video, wasn't intentional but there's enough to illustrate the point) Things I have tried Full re-install. (This includes full removal of the install folder, as well as cleaning registry keys containing "Civilization", "GOG" and "Firaxis". Rebuilt the VM from scratch, completely clean install of C3C. I even reinstalled to a different path in case it made any difference ("C:\GOG Games\C3C" just in case anything might try to reference a cached version of an old file). My Setup I am running the GOG install of Civilization 3 Complete using a Windows XP SP3 virtual machine, running on VirtualBox. The host OS is Windows 7 Professional. Hardware is a fairly ancient HP ProBook 4520s. I'm perplexed because, while it might seem like an odd setup it's been working fine for quite some time already, and there isn't really anything that can change on an isolated VM (no NIC) with no other software installed, since its only purpose is to play Civ3.