The US release of E.T. The Extra-Terrestrial - Escape from Planet Earth for Game Boy Color shares a title with its European counterpart but may have slight differences in gameplay, graphics, or language support. Details on the development and release are limited, but it's likely a platform adaptation of the character's story aimed at younger players.  Information about the specific gameplay, developer, and publisher is difficult to find for this particular version. 

E.T. The Extra Terrestrial - Escape from Planet Earth (USA)

E.T. and the Cosmic Garden (USA)