Metroid Prime 4 and Metroid: Samus Returns
The Metroid Prime 4 announcement was excruciatingly vague. Nintendo showed was a logo and some of that unsettling Metroid music, but that was enough. The mainline Metroid series has been missing in action since 2010's disappointing, Team Ninja-developed Other M, but the cult for the first-person Prime games never subsided. Metroid Prime 4 is the sort of game that's rumored every time Nintendo takes the stage for a major press conference. In 2017, they finally came through.
If that's a little too vague for you, Nintendo offered a mea culpa with Metroid: Samus Returns – a 3DS Metroid game in the tradition of the franchise's foundational 2D dungeoneering mechanics. Nintendo is calling it a “reimagining” of Metroid 2, the great 1991 Game Boy game with the extremely similar subtitle, Return of Samus. It's out on September 15, so you'll get the chance to play something new from the Metroid universe before the end of the year.