[1] The Love Tester was designed by Gunpei Yokoi (eventual creator of the Game & Watch series and the original Game Boy[2]), who said that he "loved explaining that the meter gave better results when people kissed the girl..." It was the first product by Nintendo to use real electronic components.

[2] It was also released as part of a "Mini Game Series", and other versions of the device were packaged differently and contained English instructions.

[laughs]" In July 2010, the Love Tester was re-released in Japan by Tenyo, featuring the original packaging,[1][2] and officially endorsed by Nintendo.

[1][5] The Love Tester was featured as a "DooDad" in WarioWare: Twisted for the Game Boy Advance and as the "Prototype Detector" in Pikmin 2 for the GameCube and Wii.

It also appears as a collectible item in Animal Crossing: New Leaf and can be found as an Easter egg in The Legend of Zelda: Majora's Mask 3D.