In GZDoom, language text files have a flag called $ifgame which makes a message appear differently depending on the IWAD used. Chex Quest made use of this, but sadly it wasn't used for other games like Heretic, Hexen and Strife. Every equivalent cheat uses the messages from Doom regardless, despite them being different on the original DOS game. For example, in Heretic and Hexen, when you type "quicken" and "satan" for each game respectively, "Degreelessness mode on" shows up instead of "God mode on" used in the original game.
Putting the flag to good use, I was able to restore the messages that were different in the original games themselves.
Aside from that, I also made some improvements, such as:
- Replacing the secret discovery message based on the GBA version with "You found a secret area!" akin to the 2019 re-release and Strife.
- Restoring voice lines when you quit the game in Strife.
- Replacing Doom's quit messages referring to DOS with ones from Doom 95.
- Adding a replacement obituary for the Schutzstaffel (or rather Schutzkämpfer) soldiers when playing on the Unity version of Doom 2, since Nazi-related content are censored in that version.
Spoiler: Screenshots