MTG: Arena - On the first day of 2019 I finished the new player quests, becoming a Magic player. I wish I discovered Magic sooner.
Hearthstone - Came back after a pause. My favourite deck right now is Evenlock.
Heroes of the Storm - Bye bye HotS, it was a fun time.
Guild Wars 2 - I play occasionally, mostly when a new story episode comes out.
VA-11 Hall-A - I loved this one. Cyberpunk esthetic and mixing coctails.
Stardew Valley - It's really easy to loose a lot of time playing this. You just think "Just one more (ingame) day.", suddenly you have been playing for hours.
Katawa shoujo - Played this a while ago. I might finish the routes I never did one day.
Starbound - It won't run on my pc anymore, no idea why.
Everlasting Summer - I actually 100% finished this and even played some mod (propably the only english translated one).
Bastion - I really enjoyed this game, especially the soundtrack. I still sometimes listen to it.