MrFlibble wrote on 2021-06-03, 12:48: These are the "mod" selections in the bottom left corner of the key mapper. Mod1 is Ctrl and Mod2 is Alt, I guess Mod3 is Shift? Mod3 is undefined by default. Just click the one you and with the mouse to highlight it. Thanks! Super helpful.

Why do you want to use the DOSBox keymapper when the game's own setup program (setup.exe) has options to configure the controls? Or is the GOG version missing the setup.exe? Ah. That was the clue that let me figure it out. When running UD in dosbox on Windows 10, of course it refuses to run setup. …

Hi! I normally run DOS games on my 486 PC, but I saw a great price on Ultimate Doom at GOG and decided to give it try under Win10. I am having a heck of a time reassigning the keys and I keep thinking that there is something simple I am missing. I figured out how to bring up the DOSBox onscreen …