Bloons (a creative spinoff of "Balloons") is a series of video-games developed by the game maker Ninja Kiwi for phones and tablets as well as other PCs equipped with Adobe Flash Player. There are various segregations of the series, including the Bloons series, the Bloons Tower Defense series, and various other spinoffs on the original games. Mainstream development in these series occurs for browser-based games using Adobe Flash; but many of the games have also been made available on other platforms. For example, Bloons, Bloons TD, and Bloons TD 4 can be downloaded and run on iOS devices. Devices using Google's Android OS can also download and run Bloons TD 4, which is downloadable from the Android Market.