I am currently playing this Alto's adventure mobile game series. It seems to be a good game for me. I love those endless scroll.
I am not a millennial and I grew up watching Fischer Spassky games in the early 70s. So my kind of game is really chess, online and offline. On FB I play Instant chess and been doing it for almost 5 years now. I have steadily rose up to the ranks and enjoyed playing the games. One good thing about chess is that its not that addictive and when your mind says stop, you stop. Its an intellectual game alright but chess enthusiasts will agree that there is some happiness or high in playing it.
Chess and Snakes are two classic and time less games that I'd say never die. Its just new games are small sized and getting there to be classic.