Something I randomly made earlier because I was bored. At the beginning of a map, there are no monsters around. However, where a monster would normally be has a chance of spawning boss cubes. All of the other monster spawns are replaced by boss targets. Expect to die a lot.
Should work with Doom 2/Final Doom/Freedoom maps and most weapon mods. It will kind of work with Doom 1, but there will be glitches (for reasons that ought to be obvious).
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