Assassin's Creed IV: Black Flag is a 2013 action-adventure game, and the sixth main installment in the Assassin's Creed series. A sequel to 2012's Assassin's Creed III, the game will see the player take on the role of an Abstergo Entertainment research analyst as they explore the story of Edward Kenway -- father to Haytham Kenway, grandfather to Ratonhnhaké:ton and an ancestor of Desmond Miles.
Assassin's Creed IV: Black Flag will be set primarily on and around the islands in the Caribbean Sea during the Golden Age of Piracy in the early 18th century, with the three major cities consisting of Havana, Nassau and Kingston.
Minimum System Requirements

OS: Windows Vista SP or Windows 7 SP1 or Windows 8 (both 32/64bit versions)
Processor: Intel Core2Quad Q8400 @ 2.6 GHz or AMD Athlon II X4 620 @ 2.6 GHz
Memory: 2GB for Windows Vista, Windows 7, Windows 8
Graphics: NVIDIA GeForce GTX 260 (512MB VRAM with Shader Model 4.0 or higher)
DirectX: 9
Hard Drive Space: 30GB
Recommended System Requirements
OS: Windows Vista SP2 or Windows 7 SP1 or Windows 8 (both 32/64bit versions)
Processor: Intel Core i5 2400S @ 2.5 GHz or AMD Phenom II x4 940 @ 3.0 GHz or better
Memory: 4GB RAM or more
Graphics: NVIDIA GeForce GTX 470 (1024MB VRAM with Shader Model 5.0) or better
DirectX: 11
Hard Drive Space: 30Gb