As much as I hate to double post (I'm used to being able to delete a post and just copy the content elsewhere), I was looking through my old floppies and came across one Abandonia doesn't have, and oddly, neither does HOTU. In fact,
it doesn't even have a Wikipedia article. The game's called Quatra Command for Windows. It works in WinXP (albeit insanely fast), but specifically not in DOSBox.
This is the best info I've found on it, but I'm not really sure about if it's the kind of thing Abandonia would take (since it's specifically not for DOS) or whether it's protected (the ESA site is either notably silent on their protection list or certainly makes it difficult to find).
Given that my Google-fu is weak, is there anyone with more information on this? Would it be appropriate for the site?