It features randomly generated levels so each story is different. The game is now available on Steam for PC, Mac, and Linux as well as for Xbox One. It was developed by Scarecrow Arts and published by KISS Ltd.WindowsMinimumOS: Windows Vista or laterProcessor: 2 Ghz Dual CoreMemory: 2 GB RAMGPU: DirectX 9 Compatible CardHard Drive: 350 MB available spaceRecommendedOS: Windows 7 or laterProcessor: 2.01 Ghz Dual CoreMemory: 4 GB RAMGPU: DirectX 9 Compatible CardHard Drive: 350 MB available spaceMacMinimumOS: Mac OSX 10.8Processor: 2.5 Ghz Dual CoreMemory: 2 GB RAMGPU: 512MB Video MemoryHard Drive: 350 MB available spaceRecommendedOS: Mac OSX 10.9Processor: 2.51 Ghz Dual CoreMemory: 4 GB RAMGPU: 512MB Video MemoryHard Drive: 350 MB available spaceLinuxMinimumOS: Ubuntu 12.04Processor: 2.5 Ghz Dual CoreMemory: 4 GB RAMGPU: 512MB Video MemoryHard Drive: 350 MB available spaceRecommendedOS: Ubuntu 12.04Processor: 2.51 Ghz Dual CoreMemory: 4 GB RAMGPU: 512MB Video MemoryHard Drive: 350 MB available space