Cozy Marbles: Marble Rolling Great Adventure is set to launch on Steam on August 21, 2026, with a demo currently available.
Publisher Mythwright and solo developer Pixel Pea Games announced a demo for Cozy Marbles: Marble Rolling Great Adventure in June 2026, offering a first look at the physics-based marble run sandbox. The demo includes one environment, course parts, marble customization, Twitch extensions, and challenges. The full version was planned for release within 2026 with Japanese support.
On July 17, 2026, the publisher and developer confirmed the game's launch date: August 21, 2026, on Steam. The game is priced at 1,200 yen with a 10% launch discount. It is a marble run simulator where players build courses using parts such as slopes, spirals, cannons, portals, laser tunnels, and anti-gravity fields. Players can customize marbles with colors, expressions, and hats, and can add xylophone blocks that play melodies. Completing challenges unlocks more parts and environments, including a fairy tale world and a space station. Created courses can be shared via Steam Workshop, and the game supports Twitch integration, allowing viewers to drop marbles into courses during streams.
The developer, Tim, is a solo developer based in Berlin and a co-founder of Kolibri Games, known for Idle Miner Tycoon. This is Pixel Pea Games' debut title.
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Jul 17
Publisher Mythwright and solo developer Pixel Pea Games announced on July 17 that the PC sandbox game Cozy Marbles: Marble Rolling Great Adventure will launch on Steam on August 21, 2026. The game is priced at 1,200 yen with a 10% launch discount. It is a marble run simulator where players build courses using a variety of parts including slopes, spirals, cannons, portals, laser tunnels, and anti-gravity fields. Players can also add xylophone blocks that play melodies, boosters for speed, and customize marbles with colors, expressions, and hats. The game includes a workbench with limited starting parts; completing challenges unlocks more parts and environments such as a fairy tale world and a space station. A demo is available now. Created courses can be shared via Steam Workshop, and the game supports Twitch integration, allowing viewers to drop marbles into courses during streams. The developer, Tim, is a solo developer based in Berlin and a co-founder of Kolibri Games, known for Idle Miner Tycoon. This is Pixel Pea Games' debut title.
Jun 11
Publisher Mythwright released a demo for Pixel Pea Games' physics-based marble rolling game Cozy Marbles: Marble Rolling Great Strategy on PC via Steam. The demo includes one environment, course parts, marble customization, Twitch extensions, and challenges. The full version is planned for release within 2026 with Japanese support.