Catacomb 3D monsters for Doom 2
"A mod for G/ZDoom and Zandronum that works with Doom 2 that randomizes Catacomb 3D (all four games), Hover Tank, necronita's Demon Hunter and Robot Redemption."
Catacomb 3D monsters for Doom 2 is a mod for GZDoom and Zandronum that allows the player to fight various monsters from Catacomb 3D and the Catacomb Adventure Series alongside additional foes from Hovertank 3D and its mods Demon Hunter and Robot Redemption. Versions exist for both the Ultimate Doom and Doom II: Hell on Earth IWADs. The mod was developed by Maulotaur and first released on July 8, 2020.