I can build a 2d game to run in the browser given a description, some graphics, and optional audio that you'd like to use. The game itself can be implemented as either a Flash application or from within the HTML5 Canvas element, and can use mouse and keyboard controls. I can work with you on getting the game integrated into your site, and am happy to help brainstorm if your idea isn't complete. On the other hand, if you know exactly what you want, I can execute your vision.