NVIDIA on Wednesday announced an expansion of its GeForce Now game streaming platform, introducing support for both Mac and Windows. The service allows subscribers to play graphics-intensive games on lower-end hardware by “renting” NVIDIA’s high-end cloud servers and streaming the gameplay to a local device. GeForce Now will be available in March for $25 dollars for 20 hours of play. “It’s basically a GeForce gaming PC on demand,” Huang said.