Arguably Doom itself is just a refined clone of Wolfenstein 3D, having an engine that can fake verticality is not what makes Doom, game feel and the oppressive atmosphere contribute quite a bit and have “inspired” a lot of games.
The point is, borrowing or even outright stealing ideas is hardly a new thing in game development or any other human endeavour. If it’s good people will copy it as fast as they can.
7
u/ifandbut 9h ago
If it wasn't for DOOM clones we wouldn't have modern FPS.