Doki Doki Pop'n Music (どきどきぽっぷんみゅーじっく Doki Doki Poppun Myuujikku?), literally Heart-throbbing Pop'n Music, is a dating sim game and a spin-off of the Pop'n Music series. Otherwise it was released on April 1st (April Fool's Day), it was mentioned in Pop'n Music 20 fantasia as a "joke game" (notice that Tamayo's icon is located at the bottom of the main page), symbolizing this is the entire series' prank.
- Though this is the only prank shown in Pop'n Music 20 fantasia, there are other April Fool's pranks foward, such as hug pillows consisting of Pop'n characters, mentioned in Pop'n Music Sunny Park.
- Doki Doki Pop'n Music is the first to have newly-designed characters, and also the pillows. However, they are mentioned to be April Fool's pranks, which makes Pop'n Music Lapistoria to be the first game to receive new character designs.