Metroid Dread is an action-adventure game developed by Nintendo and MercurySteam and published by Nintendo for the Nintendo Switch. It was released on October 8, 2021. Set after the events of Metroid Fusion (2002), players control bounty hunter Samus Aran as she investigates the source of a mysterious transmission on the planet ZDR. It retains the side-scrolling gameplay of previous 2D Metroid games and incorporates stealth elements. Metroid producer Yoshio Sakamoto conceived Dread for the Nintendo DS in the mid-2000s, but development ended due to technical limitations. Industry commentators expressed interest in a new 2D Metroid game, and listed Dread in their "most wanted" lists. After their work on Metroid: Samus Returns in 2017, Sakamoto appointed MercurySteam to develop Dread, the first original side-scrolling Metroid game since Metroid Fusion. Nintendo announced it at E3 2021. Metroid Dread received critical acclaim. At the Game Awards 2021, it received three nominations including Game of the Year, winning for Best Action/Adventure Game. It became the fastest-selling Metroid game in Japan, the UK and the US, and has sold nearly three million copies, making it the best-selling Metroid game. Gameplay Metroid Dread is an action-adventure game in which players control bounty hunter Samus Aran as she explores the planet ZDR. It retains the side-scrolling gameplay of previous Metroid games, alongside the free aim and melee attacks added in Samus Returns (2017). As the player explores, they discover new items and weapons, allowing them to access new areas. Dread adds stealth elements, with Samus avoiding the EMMI robots in certain areas by hiding, reducing her noise, and using the Phantom Cloak, camouflage that makes her invisible but slows her movement. If an EMMI catches Samus, the player has two brief chances to perform melee counters and escape. If they fail, Samus is killed. EMMIs can only be destroyed when Samus obtains the temporary "Omega Blaster" upgrade, which is lost upon using it to destroy one; however, destroying an EMMI grants Samus a new permanent upgrade. Upgrades can also be found by finding Chozo statues or destroying a Core-X like in previous games. Players unlock images in an in-game gallery based on their completion time, difficulty level, and percentage of items collected. Plot The Galactic Federation receives evidence that the X, a dangerous species of parasite that can mimic any creature it infects, survives on the remote planet ZDR. They dispatch seven EMMI (Extraplanetary Multiform Mobile