Banning Dolphin Emulator
Nintendo has recently issued a cease & desist, citing the Digital Millennium Copyright Act (DMCA) against Dolphin Emulator, a free and open-source video game console emulator for GameCube and Wii that runs on PC and consoles.
Dolphin Emulator:
It is with much disappointment that we have to announce that the Dolphin on Steam release has been indefinitely postponed. We were notified by Valve that Nintendo has issued a cease and desist citing the DMCA against Dolphin's Steam page, and have removed Dolphin from Steam until the matter is settled. We are currently investigating our options and will have a more in-depth response in the near future.
We appreciate your patience in the meantime.
Looks like players will not meet Dolphin any time soon on Steam.
Source: Dolphin