[Throwthrowbob]

Unsure if DOS, but I rather enjoyed Quenzar's Caverns: https://archive.org/details/QuenzarsCaverns_1020

There was also a game called God of Thunder where you play as Thor that played in a fashion like Legend of Zelda (collect items, bring to an NPC to advance, fight bosses) but can't think of the name now. It was playable in DOSBox on Windows 7, haven't tried it elsewhere yet. IIRC, you had to type in the run commands rather than just double-click to play, but that may have been me not taking time to set up something easier.