Starting May 20th, 2014, Nintendo will end Wi-Fi connective services for both the Wii and the Nintendo DS and DSi. The services include online play, matchmaking, and leaderboards. Obivously Wii U and 3DS games will remain untouched and functions such as the Wii Shop, DSi Shop, and VOD services will remain intact. A full list of the affected games can be found here.
Feb 28 2014