Grand Theft Auto’s development started off originally as a racing game, but it had a gimmick where the cops would chase you. In play testing of one of the first iterations of that design, the cops were insanely OP and would mob you to death. They thought this was so much more fun than a boring race, that it changed the entire design of the game to what GTA1 eventually launched as.

I pointed it out because I found it amusing.

I also never said Doom was an RPG. Tho, arguably, Strife was the first crossover between an FPS and an RPG; it was built on the Doom engine.