New co-op climbing title Peak has achieved remarkable success, soaring to six million copies sold within just six days of its release—earning glowing Steam reviews along the way.

As described by developer Aggro Crab, the studio behind the acclaimed Soulslike adventure Another Crab's Treasure, Peak is “a co-op climbing game where the slightest mistake can spell your doom.” The objective is straightforward: scale towering peaks across four unique biomes. But it’s not just about climbing—survival plays a key role too.

Players face countless dangers that can send them plummeting back to the mountain’s base, resulting in injuries that must be managed—or worse, death. Along the climb, you’ll discover helpful gear like energy drinks to restore stamina, as well as climbing spikes and ropes to assist yourself and teammates in ascending higher.

Despite its seemingly simple premise, there’s clearly strong demand. Aggro Crab took to Twitter to share the impressive sales milestone, quipping, "why did this stupid jam game sell more copies than another crabs treasure im gonna crash out."

why did this stupid jam game sell more copies than another crabs treasure im gonna crash out pic.twitter.com/n7KJ7RPLl8
June 22, 2025

While the tweet is clearly playful, there’s perhaps a hint of real surprise behind it. After enduring numerous hardships—including three real-life robberies—it’s bittersweet that their follow-up, a game born from a rapid development cycle, has now overshadowed their previous hit.

Still, success is success. And hopefully, this win opens the door for even more bold, imaginative projects from Aggro Crab down the line.

Call a buddy and dive into one of the greatest indie games of all time.

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