In its current state, GOG does not have MASHED set to play on Windows 10. When I tried to lunch on my Win10 PC, I got an error message, "Could not create the D3DX texture! hr=0x8876086c"

I was able to fix by setting the compatibility to XP Service Pack 2. Go in to the game folder and set the files MASHEd.exe, lauch.exe, and Launch Mashed to compatibility with XP.

Thanks for the tip !!

Addittionally I needed to:

- set the correct screen resolution in the dropdown. In the dropdown there are all sizes twice with 32bit. If I select the second one (the last element of the list), I get "Could not create the D3DX texture!". If I select the first one, it works.

- remove the gamesave.bin file. The game was not able to save any progress until I deleted the file. The game recreated it, now saving works.