Tencent, one of China’s leading online game companies and the world’s most valuable internet company after Google and Amazon, has acquired a Los Angeles-based online gaming startup for an estimated $400 million, according to Bloomberg.

This deal is not too shabby for Riot Games; a company that is only two and a half years old with only one game in its repertoire, “League of Legends.” The game is free to play, and consists of having teams of players competing one on one with quick-fighting sessions to push the other team back to its primary base, while navigating different maps, according to PCmag. According to Riot Games, more than a million players have spent more than 500 million minutes a month playing the game, and they’re hoping to expand.

“We shared a philosophy and built a mutual respect with Tencent…It is an interesting time for games. Social and mobile games are very interesting, but it’s not our focus. We are very focused on core game experiences, which are also evolving from a packaged good to an online service,” said Riot Games CEO, Brandon Beck, in an interview with VentureBeat’s Dean Takahashi.

The game already has stakes in the United States, Europe and China thanks to a previous distribution deal with Tencent from 2008. In fact, Tencent is one of the owners of Riot Games. Other investors include, Benchmark Capital and FirstMark Capital. It is said to be the largest cross-border deal made by a Chinese company in the video game industry. Early last year, Chinese Shanda Games bought San Francisco-based Mochi Media for $80 million, according to VentureBeat. Riot Games hopes to use Tencent’s resources to grow in the global market.  Last month, Tencent had expressed its desire to launch a five billion Yuan fund to invest in online gaming and other media ventures, according to the AFP.