Metroidvania games come in all kinds of varieties but I bet you haven't played anything quite like Outbuddies before.
I recently played a beta version of Outbuddies on PC and thought it was so cool that I had to write a preview for it. You basically play as a marine archaeologist named Nicolai Bernstein who awakens in undersea ruins after initially heading out to investigate a shipwreck. He soon discovers that he's mentally connected with a flying robot friend named Buddie. This fellow is incorporated into the core gameplay and a second player can even control it which makes things much more streamlined. The only other main characters take the form of the Wozan who you can rescue as you slowly uncover the massive game world. Speaking of which, there are 5 distinct areas within the undersea temple and plenty of sections are submerged in water but thankfully, the swimming controls are handled very well.
Outbuddies' gameplay is spot-on for retro Metroidvania fun. Right off the bat, you can roll to dodge enemy attacks, run which lets you jump further, and leap from walls. You'll also acquire a firearm early on that you can aim either straight ahead or up. Where the gameplay shines brightest is in Buddie's implementation. The coolest thing that he's capable of is mapping out rooms simply by having him fly around. I can't tell you how many times I've played a Metroidvania game and got annoyed that I couldn't see what's beyond the borders of the screen but in Outbuddies, you can and that's awesome. Buddie can also hack and even perform telekinesis which can allow Nicolai to progress via building stairs for him or removing obstacles. There are plenty more mechanics and fun abilities but you'll just have to play the full game to find out what's in store. I personally can't wait! Oh, and the adaptive music from Robin Ogden is great.
Outbuddies releases for Steam on October 15, 2019 and will be available for PlayStation 4, Xbox One, and Switch within Q1 2020.