No, at the moment there’s no direct competitor (in terms of control device) for Wii in PC, but yesterday I come to think about it: Wii’s “unique selling point” is most about the control device. The controlling device that brings “freedom” to movement. What if some manufacturer would build similar device for PC? Maybe Logitech or Microsoft could make a deal with some game publisher and bring a this kind of device to PC market? There’s already plenty of PCs out there, and the casual games market for PC has already been established, and there would be plenty of small indie developers interested in making casual games for Wii like controlling device. The device could cost much less than Wii – I presume anything within 50 to 100 euros range would be okay – so it could be a real challenger.
I wonder if somebody has already thought about this.