Hobbies outside of gaming? ... Uhhhhhhmmmm.... '-' Well I guess I enjoy writing stories. Most of which are fan fiction, but theres a couple that I've come up with myself. The only one I've actually finished deals with the manga Fruits Basket.
I also enjoy making floor plans for houses, "dungeons," and similar things. Usually I have implemented these into Minecraft ( maybe terraria if it's 2D ), but I've also found a 3D voxel editing program called Qubicle Constructor that I have used to create models of things. A stronghold, a floating dungeon, a metroid-esque 3D map, and even have began on recreating Fez's levels in it using the first person perspective. What I'd love to do one of these days it make a 2D metroid style map... :3
Most of my hobby base is spent on gaming of one sort or another though. Does that make me a hardcore Otaku?