The first known video game to feature what we would now call a "boss", the third link in a chain of directly D&D inspired dungeon crawlers, inventing the concept in the medium the same year D&D released as more than Chainmail. Considering that the game continued to receive updates and undergo large changes for over a decade, it's not an easy thing to "review." What I'll say is that all my plays of both the older and newer versions on Cyber1 ended with seemingly unavoidable deaths to the second or third enemy. An achievement, to be sure, but not one that retains much allure.