User blog comment:Armyman234/Treyarch hands over DLC production to Raven Software/@comment-1858559-20101214033858/@comment-28584497-20101214035152

You can't really compare the last two to the old games... Wolfenstein 3D was a different genre of game, being a dungeon-crawler, while before that it was a profile-view dungeon-crawler... and before that it was a board game of some sort.