Kingdom Key opening a gate in the Rocket League teaser for Kingdom Hearts© Epic Games / Disney / Square Enix (image via KH13 / Rocket League)

Rocket League teases Kingdom Hearts crossover for September 17

Kingdom Hearts is now teased for a second Epic game the same week. On September 15, the official Rocket League account on X posted a short teaser showing the Kingdom Key opening a gate - the classic keyhole seal animation - with the post and video indicating 9.17.26 (September 17, 2026), the same date Epic already locked for the Fortnite Outfits.

KH13 flagged the post on September 15 (2026-09-15T20:23:40Z), describing the clip as a gate opening via the Kingdom Key and noting the September 17 date matches the Fortnite Item Shop drop the outlet had covered earlier that day. The article says it will update as details surface, with no cosmetics list or pricing yet.

Prior unverified reports from dataminers (not confirmed by Epic, Psyonix, or the KH13 article) had claimed a Gummi Ship vehicle and related anthem files appeared in backend builds over the summer, with expectations of a car usable interchangeably between Fortnite and Rocket League. Those finds were leaks at the time. The Rocket League post is the first time the studio itself has acknowledged a Kingdom Hearts crossover.

For players, the practical read is simple. September 17 is now a two-game window - Fortnite gets four Outfits (Sora, Riku, Kairi, Roxas) plus two Festival Jam Tracks (Dearly Beloved, The Other Promise), and Rocket League gets its own Kingdom Hearts content starting the same day. Epic has not listed what Rocket League items will be in the first bundle, how long they will stay, or pricing, so wait for the in-game shop update. Fortnite's trailer notes "in-game purchase required"; Rocket League pricing has not been announced.

This extends the September takeover beyond battle royale. The Fortnite side was built across three prior beats - the August 16 Override reveal, the September 13 Sora teaser, and the September 15 four-Outfit trailer - and now Rocket League shares the same launch day. Watch the September 17 shop resets in both games for the final item lists.

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Source: Rocket League