Metroid: Samus Returns is a side-scrolling action-adventure game developed by MercurySteam and published by Nintendo for the Nintendo 3DS. Released in September 2017, it is a remake of the original Metroid II: Return of Samus from 1991. Players control Samus Aran, a bounty hunter, as she explores the planet SR388 to eliminate the dangerous Metroid species. The game features updated graphics, new gameplay mechanics, and enhanced combat options, including the ability to counter enemy attacks. Players navigate through various environments, solve puzzles, and collect power-ups to strengthen Samus as she faces challenging bosses and enemies throughout her mission.