Inspired by predictions of brisk growth in the $1 billion online game market, IBM, Sun Microsystems and other companies normally not associated with dragon-slaying adventures have launched projects recently to handle the complex infrastructure needed to run online games. <A HREF="http://zdnet.com.com/2100-1104_2-5226069.html?tag=zdnn.alert">IBM is one of the main backers</A> of Butterfly.net, a growing effort to apply grid supercomputing techniques to operating online games.