Super Yooka-Laylee Kart Leaked on SteamDB Ahead of Summer Game Fest 2026

Playtonic Games' next project has been revealed ahead of schedule. On June 2, 2026, a SteamDB listing for a "Super Yooka-Laylee Kart Playtest" (App ID 4809050) was spotted by eagle-eyed users, outing an unannounced kart racer set in the Yooka-Laylee universe before an official reveal . The listing was first seen at 09:20 UTC and included fully uploaded assets such as the game's title, card images, and library artwork depicting a chaotic scene full of vehicles—essentially confirming the nature of the title .

This discovery immediately pointed to one of the planned surprise reveals for Summer Game Fest 2026, which kicks off with its main showcase on Friday, June 5 . The leak was the loudest signal yet, but it wasn't the first sign that Playtonic was preparing to take the buddy-duo from platforming to the race track.

The Cryptic Teasers That Pointed to a Racer

In the days leading up to the leak, Playtonic had already begun laying a trail of breadcrumbs on social media. A series of posts on Bluesky hinted that something new was about to be announced :

• The first message, "Something big happening soon… keep your eyes peeled," was a general but pointed tease that news was imminent .
• A follow-up post was far more specific: "Collecting quills is far too slow… There must be a faster route" . This was a direct reference to the core quill-collecting mechanic of the Yooka-Laylee platformers, with the "faster route" line strongly suggesting a game focused on speed.
• The studio later posted "Soon all will make sense," tying the cryptic messages together .

These hints, combined with the SteamDB listing, left little doubt that Playtonic was preparing to enter the kart racing genre, a move that recalls the classic tradition of 90s-era mascot platformers getting racing spin-offs .

A Reveal Likely Planned for Summer Game Fest

Given the timing, all reporting points to the official unveiling of Super Yooka-Laylee Kart happening during the Summer Game Fest 2026 main showcase . The event is scheduled for Friday, June 5, 2026, at 2:00 PM PT / 5:00 PM ET / 10:00 PM BST, live from the Dolby Theatre in Los Angeles . The leak arrived just as the week of summer showcases, including the main SGF event and a PlayStation State of Play, was getting started, essentially lifting the curtain on one of the week's planned surprises .

What We Don't Know Yet

While the SteamDB leak is revealing, it is narrow in scope. The listing only confirms the game's title and that a playtest package is being prepared on Steam. Many crucial details remain completely unknown.

Unconfirmed Platforms. No platforms have been confirmed for Super Yooka-Laylee Kart. Playtonic's most recent title, the remaster Yooka-Replaylee, was released on PlayStation 5, Xbox Series X/S, Windows PC, and Nintendo Switch 2 . A similarly broad multi-platform release for the kart racer is a logical assumption, but nothing has been officially stated.

No Release Date. The existence of a playtest suggests the game is in a playable state, but no release date or window has been disclosed or even hinted at. Development could be far along or still in early stages.

No Gameplay Details. The public has not yet seen any gameplay footage, character roster, track designs, or a feature list. The only asset from the leak is the key artwork, which suggests a chaotic and vibrant racing atmosphere but reveals nothing about game mechanics or scope.

For now, all eyes are on the Summer Game Fest stage on June 5, where Playtonic is expected to finally show its hand.