Plants vs. Zombies is a tower defense video game developed and published by PopCap Games. It was created in 2009. "Plants vs. Zombies" was first released for Windows and Mac OS X, and it has been ported to consoles, handhelds, and mobile devices. In this game, the player is a homeowner who must defend against a zombie apocalypse. Zombies appear on multiple lanes that can reach the player's house. The player defends by placing plants that attack zombies. Plants can be bought with a currency called "sun". If a zombie makes it to the house on any lane, the player loses and must restart the level.