Frozen Bubble is a free software Puzzle Bobble style computer game which is available on several operating systems including Linux, Windows, Mac OS X, the Symbian Series 60, Windows Phone 7 and Android line of smartphones. There is also a single player Java applet version.The game features 100 levels and includes a level editor. Like many popular free software/open source games, it features penguins a la Tux, who in this game shoot the coloured frozen bubbles to form groups of the same colour. Such groups disappear and the object is to clear the whole screen in this way before a bubble passes a line at the bottom.Version 2.0 offers multiplayer play via LAN and Internet. Two players can also play on the same computer.