I agree with the other Assassins creed games. At least with Odyssey, that’s what I played most. You can explore all of ancient Greece and there are lots of really good and fun side quests. Just don’t think of it as a pure stealth game, like the first game was, more like an action adventure with stealth elements, or you might be a bit disappointed.
Well, my top games there would be the LucasArts Adventures like Monkey Island 1+2 and Indiana Jones Last Crusade + Fate of Atlantis. But also Sierra Adventures, Prince of Persia, SimCity... (all DOS games, that's the only thing I had). Lots of other games I forgot right now, and everyone probably has their own top picks, too.