The Mega Man Mobile games are smartphone adaptions of Mega Man 1 - 6 from the 8-bit era that are now being taken down very soon. Here's the very in-depth notice on the site:
MEGA MAN MOBILE 1-6 will be finished the sale on March 29th, 2021 Japan time.
Did you get that? That's all I have to work with here. I have to somehow create a 300-word article out of this. Don't worry, though, I have a BA is BS'ing. Let's start with what these games actually are:
Mega Man 1 Mobile is where it all began, and Mega Man must stop the evil Dr. Wily from conducting his... wily plans.
Mega Man 2 Mobile has Dr. Wily returning because he's very wily, and now Mega Man must do the thing again.
Mega Man 3 Mobile is a refreshing change of pace, as Mega Man must battle robots that have gone crazy. He must also do it in space, which makes it cooler because it's space.
Mega Man 4 Mobile has Dr. Cossack appearing, and because we don't like the doctors we're going to go in and beat him up.
Mega Man 5 Mobile has robots coming back to attack, because why not? Proto Man is involved as well. OK.
Mega Man 6 Mobile features the Global Robot Alliance forming up, because after two robot invasions you have to start thinking about the third. There's also the new bad guy called Mr. X, who is probably the bad guy because he didn't get to Xplain, amirite?
Alright, so now you know about Mega Man 1 - 6. Why are the games disappearing off mobile platforms? Because they're not selling well and they're bad ports, probably. Here's one from Mega Man Mobile with over 103 upvotes:
I'm not sure how anyone thinks this is like the original. The framerate is completely broken in this version. It doesnt feel smooth. Yet, if an NES emulator and rom is downloaded, it runs perfectly, so theres no excuse to not get the official version right. What I don't understand is how someone at Capcom played this and decided "It's good. Load it onto the Google Play Store." It sucks.