Peak Sells 10 Million Copies, Proving Game Jams Still Launch Hits

Peak, the co-op climbing game developed by Landfall Games and Aggro Crab, has officially crossed the 10 million copies sold mark. The milestone came in mid-August 2025, just two months after the game’s launch on June 16, 2025.

From Game Jam to Phenomenon

What makes Peak’s story remarkable isn’t just the numbers. It’s where the game came from. Originally conceived during a four-week game jam in Seoul, where three Aggro Crab devs and four Landfall collaborators locked themselves in an Airbnb in Hongdae, the team spent about four months total turning the concept into a full release using the kind of free tools and assets every jammer relies on. The game’s premise is deceptively simple: climb a mountain with friends, using physics-based movement that is equal parts frustrating and hilarious.

The formula clearly resonated. Within its first week, Peak had already moved over a million units, fueled largely by streamers and content creators who turned the game’s chaotic co-op moments into viral clips.

Why It Works

Peak taps into the same magic that made games like Human: Fall Flat and Getting Over It into cult favorites: accessible mechanics with a high skill ceiling, wrapped in moments that are inherently shareable. It is a textbook example of the core loop principles that keep players coming back. The difference is Peak’s focus on cooperative play, turning what could be a solo frustration simulator into a bonding experience.

If you enjoy games that blend skill with chaos, check out our best indie roguelike games for more titles that nail that “one more try” feeling.

What’s Next

The development team has hinted at post-launch content, including new mountains and competitive race modes. With 10 million players already in the ecosystem, Peak is well-positioned to become a long-term multiplayer staple. The team is reportedly attending GDC 2026, where they plan to share their game jam to hit pipeline with other developers.

Peak is available on Steam for $7.99. It supports up to four players in online co-op.