Minecraft. I tried it as a teenager and didn't really "get it". Much later in life I found some friends and none of us really played the game that much so we decided to try it together and got hooked.
As someone who has played Minecraft fairly consistently for the past 12 years or so, I want to ask, what is different about either yourself or the game that made you enjoy it now when you didn't before?
Not all that time was spent in the same world, but over three different creative worlds and three survival ones, online with friends. I like designing and building, both aesthetic creations and also functional ones. The game to me is all about imagination and so from that perspective it's just a sandbox that never runs out of content.