For some reason, the game keeps crashing at startup. Another person had their game crash and it was suggested to hit alt+enter, but mine crashes before I can even do that. All of the other oldschool doom games are working fine except this one, and this one used to work. Already tried reinstalling it and verifying game cache, but to no avail.

Actually, I just found a fix. I copied the dosbox.exe from the Commander Keen pack over the one in the MLFD2 folder and it works fine now. Something must be wrong with the .exe packaged with this game.

If you have another game that uses Dosbox, you can copy that game's copy of dosbox.exe into the Master levels of Doom folder and it will use that.

Here's the steps I took:Go into Steam/Steamapps/Common/Commander Keen/base1Copy dosbox.exe to clipboardGo into Steam/Steamapps/Common/Master Levels of DoomRight click somewhere inside the folder and hit Paste

If you don't have Commander Keen, I'm assuming you have Doom II, since you've got the master levels, so here's another way to go about it:Go into Steam/Steamapps/Common/Doom 2/baseCopy dosbox.exe to clipboardGo into Steam/Steamapps/Common/Master Levels of DoomRight click somewhere inside the folder and hit Paste