This is a patched version of the exe file which fixes some crashes, thanks to Gelly. If you'd prefer to do this fix yourself then hexedit v32win.exe, search for the bytes "34 a6 44 00 74 0f 6a 01" and replace the 74 with 71 so you get "34 a6 44 00 71 0f 6a 01"
https://drive.google.com/file/d/17JSuZxQimZY1Bw1cqtVAFDVK3PFXuzEy/view?usp=sharing
go to the game directory, probably C:\Program Files (x86)\Steam\steamapps\common\The11thHour find v32win at the bottom, right click it, click properties, then go to the compatibility tab check the boxes for compatibility mode and Windows XP Service Pack 2, and the box for run as admin, should look like this
you can join the Stauf Mansion discord for help or if you're just a fan of the series https://discord.gg/BuvyHMu
if you want windowed mode, edit the ddraw.ini file like this:
[ddraw] width=1280 height=960 ; bits per pixel, possible values: 16, 24 and 32, 0 = auto bpp=0 windowed=true ; show window borders in windowed mode border=true ; use letter- or windowboxing to make a best fit (GDI only!) boxing=false ; real rendering rate, -1 = screen rate, 0 = unlimited, n = cap maxfps=0 ; vertical synchronization, enable if you get tearing (OpenGL only) vsync=false ; scaling filter, nearest = sharp, linear = smooth (OpenGL only) filter=nearest ; automatic mouse sensitivity scaling adjmouse=false ; manual sensitivity scaling, 0 = disabled, 0.5 = half, 1.0 = normal sensitivity=0.0 ; enable C&C/RA mouse hack mhack=false ; enable C&C video resize hack, auto = auto-detect game, true = forced, false = disabled (OpenGL only) vhack=false ; switch between OpenGL (opengl) and software (gdi) renderers, latter supports less features but might be faster depending on the GPU renderer=gdi ; force CPU0 affinity, avoids crashes with RA, might have a performance impact singlecpu=true
if you're using windowed mode you'll probably want to use mhack=false for better mouse control, but if you're using fullscreen you probably need to keep the default mhack=true