minimal:
reqprocessor: Intel Dual-Core 2.3 GHz or AMD Dual-Core Athlon 2.5 GHz
reqgraphics: NVIDIA GeForce 8800GT or AMD Radeon HD 3830
reqmemory: 4 GB RAM
reqdiskspace: 5 GB available space
reqsystem: Ubuntu 12.04
reqother: Spec will be revised continually during Early Access

recommended:
reqprocessor: Intel Core i5 2.5 GHz or AMD FX 4.0 GHz
reqgraphics: NVIDIA GeForce GTX 560 or AMD Radeon HD 7750
reqmemory: 4 GB RAM
reqdiskspace: 5 GB available space
reqsystem: Ubuntu 14.04
reqother: Spec will be revised continually during Early Access