Definitely Mass Effect. Dragon Age I'm starting to get into, also really love Assassin's Creed. But Mass Effect? I have quite a bit of merchandise, even clothing. I haven't even touched the newest game Andromeda yet! D:
Saurian! I can't wait for it to be finished. I mean, how cool is a survival game based on our current updated knowledge about dinosaurs?? Also The Sims 3 & 4, but I had to uninstall them to make room for other stuff.
I also love Skyrim, but I would love it more if there was a way to take down the Black-Briar family. I hate Maven. And as Elder Scrolls games go, Morrowind is still the best.