Gameloft has UNO HD (iTunes Link) in the iTunes App Store for 99-cents (regularly $4.99) for a limited time.

Now you can play the world famous card game in the most faithful recreation ever! Gather up to 4 of your friends around the table and play using a single iPad with the new “One Device Multiplayer” mode. Of course, you can also connect with your friends’ iPad or iPhone devices for local Wi-Fi multiplayer. UNO™ has never been so fun and easy for everyone to play, so be the first to get rid of all your cards!