Flash player was a popular software for displaying multimedia content in the browser. This included videos, audio, animations and also small games. Some of the most popular include line rider (a simple game where you draw the hill for a sled rider to ride down), Desktop tower defense (a classic tower defense game), the original cookie clicker, crush the castle (a more realistic version of Angry birds) but also simple multiplayer games like territory wars. Furthermore, the early bloon tower defense ran in the browser using flash player the same way the popular, quite violent mini sandbox game happy wheels made its way onto many screens across all homes and schools :).