Rosewater. it's still not out but I've played the demo and it's alright. it's an point and click adventure game which is the sequel to their previous p&c, lamplight city (which was also good in my opinion).
other than that most forgotten games I've played were a while ago, i can't remember them.
i love point and clicks as well. there's one that i played when i was 8 in my friend's house but i only played one chapter of it and for the love of god i can't remember what its name is, and no matter how much i searched i couldn't find it. it's still haunting me in my dreams.
they were mostly free online games that my potato could run which don't satisfy the requirements of this post since i saw other people play them. the ones i can remember are:
Oh shit free games. I can add those to my library with just the click of a button and make my steam library's played games to unplayed games ratio even more embarassing! awwww loadout isnt available anymore :(
i think half of these are not available anymore, i played them like 7 or 8 years ago. loadout has a revival project called loadout reloaded. it was dormant for a year or two but i seem to recall they had some multiplayer tests recently.