Even though our own games usually are pretty physics oriented and in 3D and all that, I tend to play rather different games. I really like classic strategy games and Tower Defense games. I play Strategery almost every day (on brutal difficulty, of course) and I'm quite fond of geoDefense too. I love how balanced and hard it is. Still have one or two levels to go. I play Pinball Dreams every now and then too. So, what do you other developers like to play?