To celebrate the 45th edition of this column, my plan was to take a look at some episode replacements I’ve always meant to play but never got around to. I’d heard good things about all of them (and in most cases, I’d enjoyed their creators’ other work), so I expected to play some pretty good maps… Instead, I played four of the most amazing episodes I’ve touched in years. I know I said just a few days ago that Mapgame was possibly my favorite ever Doom episode, but all four of these are in the running for that title now — and