Renowned Explorers: Definitive Edition

Operating System: Ubuntu 14.04, Mint 17
Processor (CPU): AMD Dual-Core running at 2.6 GHz / Intel Dual-Core processor running at ~1.9 GHz (AMD Athlon 64 X2 5200+ and Intel Core 2 Duo E6300 or newer series are the oldest CPU architectures recommended)
Graphics Сard: AMD/NVIDIA dedicated/integrated or mobile graphic card, with at least 512MB of dedicated VRAM ATI/AMD Radeon HD 5000 series, NVIDIA GeForce 9600 GT and above are minimum required graphic cards. With vendor-supported graphics drivers. For open source drivers you have to use Mesa 10.3 driver or newer (it applies to Intel cards, Intel HD Sandy Bridge is a minimum)
Storage: 2 GB available space
Sound: Integrated Sound card

Operating System: OSX 10.9.5 or later
Processor (CPU): Intel dual-core processor running at 2.4 GHz (Intel Core i3 2nd gen or newer architectures are recommended)
Memory (RAM): 4096 MB RAM
Graphics Сard: Intel integrated graphics card HD4000 or above with at least 768MB of dedicated VRAM and with at least Shader Model 4.0 support
Storage: 2 GB available space
Sound: Integrated