Kingdom Hearts 3 could contain Marvel and Star Wars characters, Square Enix has revealed.
Game designer Tai Yasue told Kotaku that there is a lot of new Disney content to consider and that nothing is off-limits.
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"Yeah, I can't go into specifics, but there's a LOT of new Disney stuff and we have our plates full," Yasue explained.
"There's a lot to consider - we're looking at all of Disney, the new ones as well, they have a lot of pull and draw.
"We have to come up with a world that has a lot of originality. We want variety in our new Kingdom Hearts, so we don't want too many of one sort of world, that would look the same."
Asked specifically about Star Wars and Marvel content, Yasue added: "Well, yeah. They're all under consideration. Nothing's off-limits, we're considering all of the worlds.
"There are so many wonderful concepts. We're happy about that, but at the same time it's really tough to choose."
Kingdom Hearts 3 was announced for Xbox One and PS4 at the E3 gaming expo.
The game will mark the end of the Kingdom Hearts trilogy, but not the franchise.