Minimum: OS X version Leopard 10.5.8, Snow Leopard 10.6.3, 1GB RAM, NVIDIA GeForce 8 or higher, ATI X1600 or higher, or Intel HD 3000 or higher Mouse, Keyboard, Internet Connection
Operating System: Mac OS X 10.8+ Processor (CPU): Dual core 1.8 GHz Memory (RAM): 2 GB RAM Graphics Card: Nvidia GeForce GTS 450 or equivalent ATI card Storage: 800 MB available space
Operating System: Snow Leopard 10.68 or later, 64/32bit Processor (CPU): Dual Core CPU Memory (RAM): 1 GB RAM Graphics Card: Intel HD 3000 or better, 4000 or a dedicated GPU recommended, OpenGL 3.0 support required Hard Drive: 1 GB HD space
Operating System: Lion 10.7.5, Yosemite strongly recommended Processor Dual Core CPU Memory (RAM): 1.5 GB RAM Hard Disk Space: 1.0 GB free space Video Card: OpenGL 3.0+ support (2.1 with ARB extensions acceptable)
Operating System: OS X 10.7 Processor (CPU): Intel Core 2 Duo, AMD Athlon X2, or equal at 1.6GHz or better Memory (RAM): 2 GB RAM Graphics Card: Intel HD Graphics 4000 Storage: 2 GB available space