The Crypts of Despair. I love a good title. This is a dungeon crawl with back-to-basics graphics and controls. You can hack and slash your way down to level 30, but I have to warn you though, this game is fairly difficult. There's a quicksave system in this version (F5 to save, F6 to load), and if you're lucky, you'll come across a few slimes in certain depths. Watch your step.
Visit this page to download Crypt of Despair (1 MB). Look for the "download file" link.