PC:
I've recently finished the Shadowrun:Hong Kong Extended Edition campaign. Now I'm alternating between War Thunder, Duke Nukem 3D and Legend of Grimrock.
I tried the new Doom multiplayer open beta and wasn't impressed; it was pretty but unsatisfying. I've got a long list of unfinished games I want to get back to, starting with the Dawn of War series, the newer Wolfenstein games, Sunless Sea, and This War of Mine.
Consoles:
I've never had one.
Other:
I still crank up my old BBC model B and play the original Elite every few months.