There's a kinda remake/update/reimagined version of "Adventure" for iOS called Pixa

https://apps.apple.com/us/app/pixa/id826977016

I'm old, I played the original "Adventure" for the Atari 2600 to death when I was a kid and am a huge fan . And, personally I really liked Pixa. I thought they did a good job of translating it to something interesting with mobile controls and I "cleared it". I suspect maybe only oldies like me seeing it through the less of nostalgia would get into it.

I don't remember how long it took to clear, a few hours at least because it has multiple maps.