Wizardry is a dungeon crawling wrpg by sir-tech, basically you create a DnD like party of fantasy races and classes and go through the dungeon trying to reach the bottom floor and the final boss. It's punishingly difficult and you either have to draw your own maps or download them off the internet. It was huge in Japan and got many spin off titles exclusive to Japanese language only as well as merchandise like a line of tabletop pen and paper games.