Torchlight received quite a bit of attention last year when Runic Games announced that they would be releasing the game as a single-player, with an eye for MMO development in the next 18 months or so. Since then, Torchlight has done very well for itself: Runic Games recently announced that they had sold over 500,000 units.
The success inspired confidence in publisher Perfect World Entertainment, who solidified their commitment by purchasing an $8.4 million majority stake in Runic Games. PWE -- best known for their Perfect World MMO and more recently Battle of the Immortals -- is the publisher of the Torchlight MMO and the game itself can be found under the Perfect World banner. PWE hopes that the combined expertise of the two companies will spell success for both: "By collaborating more closely with Runic's professional team, we seek to combine their creativity and expertise in game development with our deep understanding of the online game market to create global titles."