Shinyquagsire23 has released Pazaak Wii which is an homebrew game for the Wii U, heres more details:

Pazaak Wii U is a simple Pazaak game for Wii U using decaf-emu's Wii U Toolkit. Graphics by JCarter426. This program servers an examples on how to effectively work with GX2 in C using the Wii U Toolkit (wut).

Download Here --> http://wiiubrew.org/wiki/Pazaak_Wii_U