Currently Clancy's 'The Division', but occasionally Mine craft, Elite Dangerous, and others like STO when the mood takes me.
I've been a lifelong player, and been around since the original Pac man came out , as well as Asteroids, I remember those days, in my Grand-dads pub, playing Pac man back in the early days when I could barely reach the controls. Then having a ZX Spectrum 48k during my school years back in the early 80's (wow what a machine but now my phones memory card has more to it), I remember staying up over 24 hours on a weekend to play that game (with bio breaks of course).
Back in 87 I worked for a high street electrical retailer in the UK and 'borrowed' a brand new home computer (an Amstrad that used 5.25 floppy disks) to learn about PC's (basically I 'borrowed' it as I'd ordered some games through the shops back channels, ahh those were the days. when games had playability with very little 'eye candy'.
I prefer MMO's and games where I can solo as that suits my gameplay style, sure I'll team up with people occasionally but I prefer games that take ages to complete, require some perseverance and don't really have an ending unless it can be helped.