I tried running some games in Hourglass r81 (in Windows 7 64bit), so I'm posting my results.
3D Ultra RC Racers doesn't run
1602 A.D starts game, but is unplayable (Graphics are glitched)
Might & Magic VIII starts game, but crashes immediately
The Curse of Monkey Island (via ScummVM) seems to work
Itch! doesn't run
Neighbors from Hell starts game, but doesn't seem to take any input
The results are the same in Hourglass-R v1.0 interim debug build that was posted ages ago, except for Might & Magic VIII instead of it saying that the game crashed, it just freezes on a black screen. And Monkey Island3 doesn't take input anymore.
Monkey Island 3 seems to be working in Hourglass r81.
If there is a newer Hourglass-R build that's worth testing, feel free to send it my way.
I was also wondering if you could run Hourglass on DOSBox and emulate DOS games that way?