Steam Link boxes are no more. The simple black micro PCs designed to let you play games in the living room -- or anywhere else in the house away from your gaming rig -- is sold out everywhere and it seems Valve has no plans to produce more. The Steam Link app continues to live on in mobile devices and smart TVs, so it's not the end of days, but this doesn't offer the same latency-mitigating clout as Ethernet-wired hardware. Valve, however, is offering an alternative, and it comes in the form of Raspberry Pi.