Metroid II: Return of Samus

Metroid II: Return of Samus DX is a rumored Game Boy Color port which was never released. A screenshot was featured in the German gaming magazine "Club Nintendo" that was claimed to make use of the Game Boy Color's vast color-palette. However, the game never released and its existence has been contested by a testimony from Nintendo of America translator Dan Owsen who was unaware of plans for the port, suggesting that the screenshot featured in the magazine may be a mock-up.

Last time on Samus Goes to the Fridge to Get a Glass of Milk… She fulfilled Adam’s deed, picking up the milk carton lying in the fridge. However, after gunning down the Omega Metroid, she looked around, finding no exit before the subzero temperatures knocked her out cold (pun somewhat intended). When she woke up, she found herself in her regular power suit, in a different area of the station. While she was all there in one piece, there was one problem–the milk wasn’t! And Samus knew better than to fail Adam’s orders at 3 AM. This contest hack continues the tale of Samus’s venture to get Adam a glass of milk, this time as a hack of a game few have ever attempted making hacks for. Will Samus get through okay and recover the milk once again? Find out in Samus Goes to the Fridge to Get a Glass of Milk II!

A colorization hack for Metroid II: Return of Samus that also includes bug fixes and enhancements. The colorization was done by EJR Tairne with additional programming by Quantam.

Metroid: Samus Returns is a remake of Metroid 2: Return of Samus. It uses a 3D graphic style with a side view camera that zooms in and changes for cutscenes. It also has new mechanics, items, and abilities. "Brave the hostile terrain of an alien planet teeming with vicious life forms as legendary bounty hunter Samus Aran. Her mission? Terminate the Metroid menace in this masterful reimagining of her 1991 Game Boy adventure. Samus Aran’s arsenal has been enhanced with new moves and abilities that are sure to help her face the deadly surprises that await. This intense, side-scrolling action platformer is a great entry point into the Metroid franchise and perfect for returning fans as well, and it’s available only on the Nintendo 3DS family of systems."

Metroid II DX is a mod that converts Metroid II to the Game Boy Color, now colorized. Not to be confused to the official Metroid II: Return of Samus DX, which was never released.