Ask Slashdot: Linux Game Market

dr. claw writes "Does there exist any source of information regarding the size of the Linux game-purchasing market? I'm in the employ of a major game developer, and I have been unable to find any market research numbers regarding this market. Of course, any big game house is going to want some market research before it shells out the necessary development effort. Perhaps a poll might be able to shed some light on the question? I'm not asking how many people would buy a particular game's Linux port but rather how large the Linux game market is at the present. "