Online support for Mario Kart DS and hundreds of Wii and DS games ends tomorrow

You probably don’t care that The Cheetah Girls: Passport to Stardom for the Nintendo DS is going to lose its online functionality tomorrow — but so is Mario Kart DS, Super Smash Bros. Brawl, and hundreds more.

The Nintendo Wi-Fi Connection service that ran online play and interactivity on the Wii and DS systems is coming to an end tomorrow. That means no multiplayer with people through the Web, no more leaderboard support, and no more user-generated content. This won’t affect the Wii Shop channel or the Nintendo DSi Shop, so you can still purchase and download digital games for those systems.