Alexander Brandon’s revelation that he is working with Retro Studios has once again cranked the Metroid Prime rumors into overdrive. Brandon has been a huge Metroid fan for a long time now, so it wouldn’t be a surprise if he were to jump at the chance to work on the latest installment. Is this proof of Metroid Prime 4? No, but it is the latest addition to a pool of circumstantial evidence that indicates a new Metroid is coming.

For starters, Retro Studios has been working on a very secretive project, one they began working on months before Donkey Kong Country: Tropical Freeze was completed in early 2014. It was originally supposed to be a Wii U title, but Kensuke Tanabe, Metroid Prime’s director, is on record saying the next Metroid Prime would now likely be on Switch. In that same instance, he said it would take roughly three years to make a new Metroid Prime. Retro Studios has now been working on their secret project for a bit more than three years.

Furthermore, Retro Studios has been tweeting things to fans, such as PATIENCE spelled in Scrabble tiles, and images of prime ribs when asked what they’re currently working on. With a new platform in need of support, E3 just around the corner, and a project that’s been in development for the better part of four years, Metroid Prime fans are sure to have news of Retro Studios’ latest game soon. Whether or not it’s what they want, we’ll just have to wait and see.