The MMO game space just got a new developer/publisher today with the official announcement of En Masse Entertainment. Based in Seattle the company is a subsidiary of South Korean-based publisher Bluehole Studio and are planning to bring Bluehole's fantasy themed MMO game Tera to North America and Europe.

En Masse's co-founders include Patrick Wyatt as its Chief Operating Officer. Wyatt had previously co-founded ArenaNet and helped to launch their title Guild Wars. Another co-founder is Senior Producer Brian Knox who previously worked as Producer for NCsoft's latest MMO launch Aion.

As far as Tera itself, it's described as a game with lots of player-controlled action in "a world where six races try to work together for the common good." It's scheduled to launch in Korea later this year but no definitive launch date has been announced for the US and Europe. The game's official web site has already launched with lots of video and screenshots from the game.