Sonic Racing: CrossWorlds is officially out next week, on September 25, 2025, but that official release date hasn't stopped physical copies of the game from finding their way out into the wild early. While physical copies of a racing game don't exactly mean big narrative spoilers are about to hit the wire the way it would for other titles getting out early, in this case, it does seem to mean the rest of the DLC collaborations SEGA had planned getting leaked early.
A photo of a postcard that came with physical copies of the game, which is stored inside the case, shows the remaining three collaborations that SEGA has yet to announce for Sonic Racing: CrossWorlds. The image was posted to the Sonic the Hedgehog Reddit, revealing that the next three collaborations after the already announced Minecraft, Pac-Man, and Spongebob collaborations are: Teenage Mutant Ninja Turtles, Avatar Legends, and Mega Man.
Of course, this doesn't necessarily reveal which characters from each of the above series will be included. The official website for Sonic Racing: CrossWorlds shows eight mystery spots in the roster of DLC characters. Half of those could be filled by the Turtles, but the image specifically lists TMNT: Mutant Mayhem, so we could see other characters beyond the four teenage turtles, and that's before mentioning that there might be a greater focus on including characters from the other three series.
At the very least, we know to expect new tracks, characters, and vehicles related to Teenage Mutant Ninja Turtles: Mutant Mayhem, Avatar Legends, and Megaman. Also, since this information was featured in a postcard coming with physical copies of the game that will be officially available in just a few days, it's likely we'll hear a proper announcement from SEGA regarding these DLC collaborations soon.
In the meantime, you can check out Wccftech's review of Sonic Racing: CrossWorlds from Nathan Birch, who writes, "Sonic Racing: CrossWorlds is a solid alternative to other games in the mascot-racer space, offering speedy, stripped-down action, a few clever twists, and perhaps most importantly for some folks, courses that feel more like those in Mario Kart 8 than the less universally-beloved Mario Kart World. A general lack of content and originality keeps CrossWorlds from fully breaking away from the pack, but it’s at least in striking distance of the winner’s circle."
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