Abstract: Some embodiments include a method for presenting wagering games in a browser on a mobile device. The method can include detecting, in an application programming interface (API) on the mobile device, a request to initiate a wagering game in the browser on the mobile device. The method can also include after detecting the request, receiving one or more API calls from a wagering game module residing on the mobile device, wherein the API calls request wagering-game-specific services to facilitate progress of the wagering game. The method can also include transmitting, by the API to the browser, information needed by the wagering game module to present the wagering game in the browser.