I remember when I was a kid I had a heck of a time playing Jedi Knight with mods to the brim; I had mods that changed my weapons to James Bond's weapons, mods that gave me ninja gear, mods that gave me full levels with in-game cinematics (that the creators voiced because why put in this much effort and stop at VA work?), mods that gave me brand new levels including a famous multiplayer level designed to look like a school, etc etc

Mods back when I was a kid was absolutely awesome; sadly tons of games today just can't be modded (or if they can, people just aren't bothering). I STILL prefer the original 90's doom with mods over the new self important doom ('rip and tear', 'rip and tear'; yeah right, give me a break; your boss fights are literal minigames; the cyberdemon fight is just flappy bird).