Xfire's just finished tallying up their 8-million strong user base's daily play time for the month of September. And given that school started for the said month for territories across Europe and the US, we're looking at an overall decrease in playtime for the instant messaging service's top MMORPGs and FPS.

Blizzard's World of Warcraft suffered an 18 percent drop, with competing titles like ArenaNet's Guild Wars, Joymax Co.Ltd.'s  Silkroad Online experiencing 13 percent and 27 percent decreases in their population's overall play time respectively. Other major games like Wizet's Maple Story, AeonSoft's Flyff, CCP Games' Eve Online, and Turbine, Inc.'s  Lord of the Rings Online remained unchanged.

Similar trends were reported for Xfire's multiplayer FPS community. Top games like Infinity Ward's Call of Duty 2 Multiplayer lost 12 percent, and Valve Software's Counter-Strike Source lost 18 percent of their population's play time. Other frequently played FPS games for the month include Digital Illusions CE's Battlefield 2, Splash Damage's Wolfenstein: Enemy Territory, and Counter-Strike 1.6.