1.48 million units within the first two days of release, topping the Japanese sales chart that week. Within two weeks, the games had sold a combined total of over 2.00 million units. By December 18, 2009, the games' Japanese sales totals had surpassed 3.22 million. In Australia, over 50,000 units sold in one week. In the United States, the games managed collective sales of 1.73 million in their first month, with the SoulSilver version selling 1.01 million and HeartGold selling 0.76 million units. The combined sales of the two games made them the highest-selling games of March 2010. By May 6, 2010, the games had sold 8.40 million units worldwide, and the games reached 10 million sales worldwide by the end of July 2010. As of September 2017, the games' combined sales have reached 12.72 million. Notes References External links (US) 2009 video games Game Freak games Japanese role-playing video games Multiplayer and single-player video games Video game sequels Nintendo DS games Nintendo DS-only games Nintendo Wi-Fi Connection games HeartGold and SoulSilver Role-playing video games Video game remakes Video games developed in Japan Video games featuring protagonists of selectable gender Video games with alternative versions Video games scored by Go Ichinose Video games scored by Junichi Masuda Video games scored by Shota Kageyama