Polygon de Hakken!! Tamagotchi (ポリゴンで発見!!たまごっち) is a Tamagotchi CD-ROM that was released in Japan for Windows 95 and Windows NT 4.0. It was released on February 17th, 1997. It is the second Tamagotchi PC CD-ROM released in Japan, succeeding Tamagotchi CD-ROM (JP) and preceding Pasokon de Hakken!! Super Tamagotchi.
It was the first of the Tamagotchi computer software to use 3D models of the characters. They could move around on the desktop and help send e-mails, as well as interact with the official web site. However, the web site ceased operation on March 31st, 2000.
It focused on the characters from the second Gen of the original Tamagotchi.