Mega Man on DOS is a unique game in the Mega Man series that seems entirely disavowed by Capcom. It's a Mega Man game with a very interesting story and the Gaming Historian recently brought that story to his channel. I've always had a soft spot in my heart for Mega Man for DOS even though I could honestly never get past the intro part with the dogs.

If you are looking for more Mega Man on DOS fun check out this incredible speedrun by Lizstar at AGDQ 2019. Not only does it feature the infamous Mega Man on DOS but Lizstar crushes the run at a blistering 10:50 minutes and doesn't get killed by the dog right away!

https://www.youtube.com/watch?v=tbs6PEgXEJg