The free-to-play model for online PC games seems to be working for some game developers. Earlier this week we reported that the change to such a model for Turbine's fantasy MMO Dungeons and Dragons Online has been a big success. Now Nexon America, which runs a number of similar games. has announced big percentage increases for revenues for its third quarter and September time periods

According to their press release, revenues for their third quarter (July-September) were higher by 36 percent. Revenues for September were up 44 percent. As usual, Nexon America did not reveal specific revenue numbers nor did they reveal if the company generated profits. Nexon America's launched the open beta for their next game, Dungeon Fighter Online, earlier this month and that will certainly generate even more money for the company.

In related news, Nexon announced that their FPS game Combat Arms will add a "casual server" called Foxtrot for new players. In addition new weapons, including a rocket launcher, are available for use in the game.

[via email press release]