VMware Fusion

I was just looking on the apple store (the site, not the actual store)
and saw a program called VMware, it lets you run windows programs, on your mac, along with linux and any other PC OS, without rebooting your machine
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wa/RSLID?mco=324B772B&nplm=TP185LL/A

and I was wondering if this would let me play PC games, like guild wars... or if this program only works with PC applications, not games....