Kongregate is an American web gaming portal and video game publisher. Its website features over 124,000 online games and 30+ mobile games available to the public. The company also publishes games for PC, mobile, and home consoles. It was purchased by GameStop Corporation in 2010 before being acquired by Modern Times Group MT AB in 2017. The website's portfolio of games spans a wide range of genres. Kongregate is the home for several idle/clicker games, including Adventure Capitalist, Crusaders of the Lost Idols, and Anti-Idle: The Game. On the web portal, users could upload Adobe Flash, HTML5/JavaScript, Shockwave, Java, and Unity games with integrated high scores and achievement badges. The portal was closed to new user submissions in 2020, though previously submitted games remain. Kongregate was released on October 10, 2006, by siblings Emily and Jim Greer into an alpha testing phase, which lasted until December 2006. During this time, game developers and players tested the site's interface and functionality. The site formally entered the beta testing phase on March 22, 2007. In December of the same year, the site was formally opened to the public. As of July 2008, Kongregate had raised around 10 million fund devoted to mobile gaming, and as part of this new program, the former Zynga executive Pany Haritatos was hired to oversee it. The money was used to financially support free-to-play mobile game developers by helping them test and market their games. Some of the developers benefited by this fund included Synapse Games, RedPoint Labs, and Making Fun.