The soccer-with-cars phenomenon Rocket League is one step away from being the first game ever to bridge multiplayer between Xbox One and PS4 players.
The catch? Developer Psyonix just needs to get the ol' thumbs-up from Sony before it can go live.
We've known for while that Psyonix had the know-how to get the two consoles playing together, but now the concept is a reality - one just waiting for the higher-ups to pull the trigger, according to IGN.
Should they get the necessary approval, Psyonix's vice president Jeremy Dunham remarks that they could get the two consoles talking to each other in less than a day.
"It'd literally take a few hours to propagate [cross-console play] throughout the whole world," says Dunham, "so really, we're just waiting on the permission to do so."
Earlier this year, however, Microsoft showed an interest in opening up the Xbox One to cross-network play with other consoles, which seems to indicate that the company has already given Psyonix its blessing.
"We're still very confident that [Sony's] eventually going to open those doors and welcome us in," said Dunham, "but we also are really understanding that it's going to take a while, especially given all the ramifications of everything."
Sony has been open-minded to cross-console play as well, but has yet to make a firm stance - understandable, since opening up your online network to some other company's console isn't a decision one makes lightly.
We've reached out to Sony for comment, and will update as new information is given.