[Auto-Fixed] How to trick Prboom-plus into running a wad as a Doom 2 Iwad

[Kira]

Hey guys,

I've made an Iwad using some Freedoom placeholders to complete what isn't already done and changing the first letter from P to I with an Hex Editor. Prboom-plus is launching, fine fine... then I am in front of the Doom menu... while I'd like it to behave like if it was Doom 2.

Any idea? How did Freedoom succeed at this? What defines the difference between Doom and Doom 2 in Prboom-plus?

Thanks in advance, you'll soon know what the project is.

Edit: seems like adding filler maps fixed it... Well, that's more placeholders from Freedoom ATM, but well, it works.