Superliminal.
Patient Gamers
A gaming community free from the hype and oversaturation of current releases, catering to gamers who wait at least 12 months after release to play a game. Whether it's price, waiting for bugs/issues to be patched, DLC to be released, don't meet the system requirements, or just haven't had the time to keep up with the latest releases.
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Forgotten Anne is a really good one that took me about 8 hours to complete.
Shattered Pixel Dungeon
I'm very much the same way, but this one I keep coming back to because there's so many different ways to play it. Chances are, if you have a phone or computer, you can even get it free (though I would recommend supporting the developer, it's a passion project and he's never sold to adding ads)
Resident Evil 7 & 8. Seven sets a new protagonist in a series reboot sort of way, so you might miss some Easter eggs and callbacks but playing the previous games AT ALL. Its meant to be an entry point in the series.
Most point and click adventures take about 6-10 hours in my experience. My favorites are the Monkey Island and Deponia games.
If you wanna have some nostalgia for 2000s era AOL chatrooms you ahould try Emily is Away Too
I think Cocoon will fit in 10 hours. It did for me.
Ori
A bit old, but gold: Fate (the dungeon crawler one). It's a bit low-poly by today's standards, but it's so fun and has killer music, lots of spells and weapons, tons of interesting enemies and can be beaten in like 6 hours.
Ratchet and Clank (into the) nexus on ps3 is like a 5 hour game. It also nicely ties into the latest game if you've yet to play that
World of goo
Take a look at Contrast, a 5 hours narrative platforming game with pretty visuals an concept
Small saga