Nintendo has updated their downloadable Club Nintendo rewards today replacing Touch Solitaire with Brain Age Express: Sudoku for 3DS eShop. The expiration date for this offer is now December 16 and the price is 150 coins. Be sure to check back December 10 for the next reward, most likely for WiiWare or Wii Virtual Console.
Brain Age Express: Sudoku - Nintendo 3DS
150 Coins (Available Until December 16)