Let's see...
I'm half-decent at bullet hells thanks to my hours in Epic Battle Fantasy 3.4: Bullet Heaven and EBF 4.4: Bullet Heaven 2.
I've downloaded Danmakufu so I can make my own bullet hell.
I play on the official Touhou server for Minecraft, and am currently lamenting the loss of my prized danmaku weaponry.
I'm okay at Terraria, although I have this nasty habit of face-tanking attacks that generally spells my downfall.
In Starbound I live a solitary life. My first character, Halley Starstorm, has a kickass plasma gun.
I've played EBF 1 to its near conclusion and played the rest of the series all the way through.
I've played a pre-owned Platinum and Pearl, played my own copies of HeartGold, SoulSilver, White, X, and Omega Ruby, as well as starting a new file on a pre-owned Explorers of Darkness.
I've played Rouge Legacy, but never been quite good at it... Same goes for Dwarf Fortress.
I used to play Balland Battles, but then it kinda broke down.
I love Smash Bros enough to incorporate them into my fanfiction.
And I'm perfectly more than willing to shove Guild Wars, Kingdom Hearts, and Touhou into my Homestuck/EBF/Minecraft/(Twitch Plays) Pokémon fanfiction with little bits of LEGO Star Wars, Undertale, Crystal Story, Starwish RPG Shooter, Dwarf Fortress, HALO, Iji, and Hina's Fluffy Dream thrown in. (although mainly it's just Guild Wars, Kingdom Hearts, Touhou and Homestuck that I've been writing.)