My obsession is grand-strategy gaming. First I played historical scenarios in Civ2, then Medieval Total War until I discovered Europa Universalis 2. I've been hooked on Paradox games ever since.

The only two games that I've still been playing over the last few decades are like FreeCell, Soltaire, and Tetris. I guess that would best be called as obsessions :P

I'm probably most crazy about RPGs and RTS games. I love making my own characters.

You really do not want to know.

I'm gonna have to go with Gvaz and say RPG's and RTS games d it for me. I occasionally turn my hand to FPS games though.