Variants on the basic mechanics include levels where gravity affects the trajectory of the pulses, as well as blocks that can only be removed in non-traditional fashion, such as dropping them out of the bottom of the grid or eliminating a certain-colored block next to them.System RequirementsPCOS: Windows XP SP2 or laterProcessor: 1.4Ghz CPU minimum, 1.8 Ghz recommended for background animation or multiplayerMemory: 1 GB RAM (2 GB recommended)Graphics: 800x600 or greater screen resolution (32 bit color, 1280x720 recommended)Hard Drive: 600 MBOther Requirements: Internet Connection or LAN required for networked multiplayer. Single-computer multiplayer is also available.MacOS: Mac OSX Intel CPU and "Leopard" 10.5 or later.Processor: 1.4Ghz CPU minimum, 1.8 Ghz recommended for background animation or multiplayerMemory: 1 GB RAM (2 GB recommended)Graphics: 800x600 or greater screen resolution (32 bit color, 1280x720 recommended)Hard Drive: 600 MBOther Requirements: Internet Connection or LAN required for networked multiplayer. Single-computer multiplayer is also available.LinuxOS: Ubuntu 10.10 or later, although other unsupported distros may very well workProcessor: 1.4Ghz CPU minimum, 1.8 Ghz recommended for background animation or multiplayerMemory: 1 GB RAM (2 GB recommended)Graphics: 800x600 or greater screen resolution (32 bit color, 1280x720 recommended)Hard Drive: 600 MBOther Requirements: Internet Connection or LAN required for networked multiplayer. Single-computer multiplayer is also available.
