Nintendo just dumped a ton of new info about Super Smash Bros. Ultimate into our laps, including new characters, new stages, and new Assist Trophies, but the company also teased a big mystery with no clear answer in sight. When Smash Bros. series director Masahiro Sakurai revealed the new game’s main menu he purposefully blurred out one of the modes, but some fans think they have a pretty good idea what it could be: a new Subspace Emissary adventure.

The theory comes from Reddit, where one Smash Bros fan shared a screenshot of the new main menu and asked if the blurred section could be hiding a follow-up to the Subspace Emissary campaign from Smash Bros. Brawl. The ensuing comments make a passionate argument that since Nintendo seems focused on bringing back old classics in Ultimate (be it popular characters or original N64 stages), a Subspace Emissary return shouldn’t be ruled out either.

If you’re not familiar with Subspace Emissary, it’s basically a 5-hour story mode that attempted to tie together all the different characters and video game worlds featured in Super Smash Bros. Brawl. It wasn’t exactly a compelling plot, but it was still fun to see some of our favorite video game heroes team up against a legion of the worst bad guys in gaming history.

Subspace Emissary was also a fun multiplayer experience. You worked as a team with a friend. So it was a good alternative to just duking it out, especially if you weren’t evenly matched on the battlefield.

subspace emissary super smash bros ultimate adventure mode new
Subspace Emissary in 'Smash Bros. Brawl'

Of course, this is just a rumor for now, but it’s an exciting one. If Nintendo is planning to reveal a new Subspace Emissary-style campaign the news will probably come in the company’s next Smash Bros. Ultimate-focused Direct, whenever that happens…

Super Smash Bros. Ultimate launches December 7 on Nintendo Switch.