Climbing to the Top: The Co-op Sensation “Peak” Sells an Astonishing 10 Million Copies

In a world of blockbuster AAA releases and highly-marketed live-service titles, a new champion of independent gaming has emerged. The co-op climbing sensation, Peak, has officially sold over 10 million copies since its release in June 2025. This monumental milestone, announced by Gamescom Opening Night Live host Geoff Keighley, is a powerful testament to the game’s unique concept, its hilarious physics-based gameplay, and the power of viral marketing and word-of-mouth. The game’s success story is a masterclass in what a small, dedicated team can accomplish, proving that innovation and genuine fun are far more valuable than a massive marketing budget.

Developed by the small but ambitious team at Aggro Crab and published by Landfall, Peak is a survival climbing game where up to four players must work together to scale a perilous mountain. The game’s core loop, which involves managing stamina, overcoming ridiculous obstacles, and navigating treacherous terrain, is a recipe for both side-splitting laughter and moments of genuine tension. The game’s design, which embraces a kind of “glorious jank,” has made it a favorite among streamers and content creators, leading to a massive surge in sales and player count. The game’s sales have been particularly explosive in recent weeks, with a new update and a significant price drop on Steam pushing it over the 10 million mark.

A Journey from Obscurity to an Indie Phenomenon

The success of Peak is all the more impressive when you consider its humble origins. The game was reportedly conceived during a month-long game jam and developed in an Airbnb, a far cry from the multi-million dollar budgets of its competitors. However, the game’s simple, yet brilliant concept resonated immediately with players. It sold two million copies in just nine days, and its sales have continued to climb at a rapid rate, especially on Steam where it has consistently been one of the platform’s most-played games. At its peak, the game reached over 171,000 concurrent players, an astounding number for a new indie title.

The game’s success is not just a matter of luck. The developers have been actively engaged with the community, releasing a variety of new updates and content, including the recent “Mesa Update” which added a new desert biome and new items. The developers have also taken a strong stance against a variety of cheap imitations on other platforms, with a social media post stating that they would “rather players pirate Peak than play a ‘microtransaction-riddled Roblox slop ripoff’.” This dedication to their creative vision and their commitment to a positive player experience has earned them a legion of dedicated fans who are more than willing to support the game.

The “Evergreen” Appeal of a Great Concept

The success of Peak is a significant moment for the gaming industry. It reinforces the idea that an indie game can compete with the biggest names in the business if its core concept is strong, its gameplay is engaging, and it is a fun experience to play with friends. The game’s focus on cooperative play, a genre that has seen a recent renaissance, is a key part of its appeal. It’s a game that is as much about the hilarious moments that happen as a result of the physics engine as it is about reaching the top of the mountain. For a new generation of players, it’s a game that is perfect for streaming and sharing, a critical element for success in the modern gaming landscape.

The announcement that Peak has sold 10 million copies is a milestone for the game, for its developers, and for the indie gaming community as a whole. It’s a powerful story about the little game that could, and it proves that in the world of gaming, the best ideas will always find a way to climb to the top.