"Metroid... Omoroido!" (or Metoroido... Omoroido!) is an infamous phrase spoken the end of the Japanese Metroid II: Return of Samus commercial, by its narrator. The phrase translates to "Metroid is fun!". Omoroido is a play on the Japanese word "omoroi", which means fun or exciting. 15 years later, the phrase was again used in a secret message heard via the transmission console in Metroid Prime 3: Corruption by Yoshio Sakamoto.
Sakamoto speaks the phrase at the end of his message after asking players to anticipate the next Metroid. Sakamoto's message can be heard here:  Three years after that, the phrase was again heard at the end of the Japanese Metroid: Other M commercial. Both commercials use the same font for the words. The Japanese version of the Overview and Infiltrating SR388 trailers for Metroid: Samus Returns (a remake of Metroid II) features the phrase again, with a new font.
|Commercials||Metroid Prime • Dig • Who Are You? • Two Separate Worlds: One Shadow, One Light • Airport / Internet • TV Commercial :60 Spot • Samus is Back (US) • Samus is back Spot (IT)|
|Developers||Adam Crabb • Animal Logic • Ntropic • Alex Proyas • Len Wiseman • Leo Burnett Worldwide • Chisato Morishita • Jenni Källberg|
|Locations||Kraid's Toy Shop • Metroid Fusion Bio-Lab • 03 Bay|
|Subjects||Bioreactor System • Bounty Hunter Chronicle • Grave digger • Killer • Metroid... Omoroido!|