Kongregate

Kongregate is a browser games hosting website owned by Gamestop Corporation, which allows users to upload user-created Adobe Flash, HTML 5/JavaScript, Shockwave, Java or Unity3D games. Users can rate the games and search games by its user rating. It features an API that Flash and Unity developers can integrate into their games which allows users to submit high scores and earn achievement badges. Badges and local score submissions are available only on games whose developers choose to use the Kongregate API. Most of the site's functionality is free, but a paid membership called Kong Plus is also offered.