Wii U’s killer app in Japan might be Wii Karaoke U. Nintendo partnered with Joysound to turn living rooms into karaoke boxes. Wii Karaoke U has over 10,000 songs available on a subscription basis. One hour costs 100 yen ($1). A 24 hour ticket is 300 yen ($3). Longer subscriptions for 30 days and 90 days are 1,000 yen ($10) and 2,000 yen ($20), respectively. That may sound pricey, but one night of karaoke can easily run over 2,000 yen. Songs are selected using the Wii U GamePad, which is a similar interface to actual karaoke boxes.

Nintendo is pushing the Wii U in Japan by advertising Wii Karaoke U. And out of all the possible songs to showcase, Nintendo picked the theme song from Neon Genesis Evangelion, "A Cruel Angel’s Thesis." Here’s jazz singer Aki Yashiro singing it.