Last Dream: World Unknown is the rich result of over four years of intensive development. This vast RPG is both a standalone adventure and the thrilling sequel to the breakout game, Last Dream, and incorporates the best features of classic RPGs: replayability and complete immersion into a vibrant world. Features 45+ hours of dynamic gameplay 25+ additional hours of immersive side quests 1+ hour of interspersed flashbacks 225+ compositions from talented, independent artists 20 mind-bending puzzles 240+ tracked achievements 150 carefully-authored mini-stories to enjoy 750+ unique paths by virtue of the non-linear gameplay 900+ page comprehensive Strategy Guide and walkthrough System Requirements Windows MINIMUM: OS: XP Processor: 1.6 GHz Memory: 2 GB RAM Graphics: Intel HD Graphics 4400 or similar Storage: 2 GB available space RECOMMENDED: OS: Windows 7+ Processor: 2.4GHz dual-core (Intel Core i5 or similar) Memory: 4 GB RAM Graphics: NVidia GeForce GTX 760 or similar Storage: 2 GB available space Mac OS X MINIMUM: OS: 10.7+ Processor: 1.6GHz dual-core (Intel Core i5 or similar) Memory: 2 GB RAM Graphics: Intel HD Graphics 4400 or similar Storage: 2 GB available space Additional Notes: 64-bit only RECOMMENDED: OS: 10.10+ Processor: 2.4GHz dual-core (Intel Core i5 or similar) Memory: 4 GB RAM Graphics: NVidia GeForce GTX 760 or similar Storage: 2 GB available space Additional Notes: 64-bit only SteamOS + Linux MINIMUM: OS: Debian-Similar, Kernel 4.3+ Processor: 1.6GHz dual-core (Intel Core i5 or similar) Memory: 2 GB RAM Graphics: Intel HD Graphics 4400 or similar Storage: 2 GB available space Additional Notes: Linux OSes are extremely diverse; please contact us if your preferred OS has problems. RECOMMENDED: OS: Linux Mint 17+ Processor: 2.4GHz dual-core (Intel Core i5 or similar) Memory: 4 GB RAM Graphics: NVidia GeForce GTX 760 or similar Storage: 2 GB available space Additional Notes: Ubuntu, Mint, and SteamOS are tested; please contact us if your preferred OS has problems.