On an old-school FPS mood now, mostly random community Doom maps. Also recently played Dusk and got Amid Evil in the bundle, as I was interested in Dusk's style, and it has a kickass soundtrack. Turns out that I like Amid Evil even more and I can't wait for the DLC which's release date will always be dubbed by the devs as "SOON™".
Online I play this game and Project Diablo 2, both childhood games but with extra sauce.
Binding of Isaac Repentance got released yesterday, so I've been playing that too.
And some randomizer Metroidvanias, mainly with Metroid Prime and Ori's 2nd game.