they are sent to the Biosphere to be reborn. The player must clear the Viruses from all the facilities and reactivate them. In the final level of the game, Sepulveda traces the Viral infection back to its source, which is e-mail spam. After Sepulveda had accidentally flashed an image of his face across the skies of Darwinia, The Darwinians had assumed him to be God. They then re-aligned a portal inside Darwinia in an attempt to communicate with God. The Darwinians managed to access Sepulveda's computer, downloading several files and eventually downloading the Spam. The e-mails were infected with a very nasty strain of internet virus which corrupted the Darwinians. The player is tasked to destroying the few remaining e-mails. Gameplay Darwinia mixes elements from strategy, action, puzzle, hacker and God games alike, meaning that it does not fall under a specific video game genre. The player has the ability to run several programs through the Task Manager, similar to units used in many real-time strategy games. Research allows the player to upgrade programs and weapons, which is critical as the enemy develops. Mission objectives are given at each location/level, as the player and the Darwinians attempt to wipe out the Viruses. Development Darwinia was inspired by the theme of the first Indie Game Jam, where a group of programmers experimented with generating tens of thousands of sprites on screen at once. Introversion began prototyping a war game with more units on screen than had ever been done at that point. After months of iteration and development, this coalesced into the gameplay for Darwinia. The initial beta testing of Darwinia began on 27 August 2004, and the beta testing of the full game started on 26 November, the same year. A demo level of Darwinia was released 3 months later on 21 January, and can be downloaded from the Darwinia website. Darwinia was released in Europe on 4 March 2005 (the U.S. version followed on 12 June 2006), while the Macintosh version was released 30 March 2005 by publisher Ambrosia Software. A patch was released on 28 April 2005 for Microsoft Windows, bringing the version to 1.2. New features included an improved unit selection system, as well as numerous modding updates including the ability to create custom strings. Another patch (version 1.3) was released in September 2005, which includes the option (enabled by default) of clicking icons or using keyboard