Castlevania: Lords of Shadow developer MercurySteam pitched a Metroid game to Nintendo earlier this year.
That's according to an investigation from Nintendo Life, citing numerous sources familiar with the project.
The untitled pitch was for a 3DS and Wii U game that would star Samus and a number of other galactic bounty hunters. Players would be able to pick which one they wished to play as.
MercurySteam staffed up a team of developers to work on the project and poached talent from a number of other Spanish studios.
But word of the game has gone quiet after the project was presented to Nintendo - which may suggest that the pitch was not successful.
As if in confirmation, MercurySteam is now teasing an upcoming sci-fi project where you can "explore new worlds, fight strange creatures, discover new heroes" - but with a grizzled cigar-smoking male star.
It may well be that the Metroid project has been retooled to fit a new IP now that Nintendo seems to have turned the studio down.
Nintendo is currently developing its own Metroid spin-off for 3DS, titled Metroid Prime Federation Force. It was revealed back at E3 this year to a negative response from fans.
Meanwhile, Metroid Prime series boss Kensuke Tanabe has told Eurogamer about his plans for a proper Metroid Prime 4, which may include a time travel mechanic. But such a project would now likely not materialise until Nintendo has launched NX, its in-development Wii U successor.
Hear more on the when MercurySteam's project was pitched in the video below: