Our focus has traditionally been on titles that have been dumped / imaged from physical media in some format. I agree with tomse that we may need to look at a dat for files which were "born digital", or where there is no extant physical media, but that has always been quite a tricky proposition.
1) How do you verify that the files are "as released"? I realise that this is also an issue for physical media, but particularly where the original source of release has disappeared it's arguably harder to verify the integrity of archives of executables + data
2) How do you pick which files "should" be included. Do you keep everything that's in the archive you downloaded, or just the files necessary to run the software? This is also fed into by (1), as many BBSes, FTPs, abandonware sites, etc. add their own little identifiers, some files might change on first run (or every run), operating systems themselves might create hidden files as part of their regular operation, etc.
3) Similarly, do you keep every version of every file, even where the changes are essentially meaningless? Or do you pick the best / cleanest version and keep only that?
Realise this is quite a negative response, and I agree we probably need to look at addressing this problem at some point.
In the interim, archive.org has a massive collection of DOS games, so it may be best uploading these files there and then contacting someone so they can be moved into the appropriate section.
