Co-op climbing game Peak surpasses astonishing milestone in less than a month

2025 has been a year of surprise indie successes. Between REPO, Schedule 1, and Peak, we've had a collection of inventive releases that have found immense popularity on Steam. That last one has proven particularly well-liked, too, as Aggro Crab has now announced that Peak has hit a frankly astonishing milestone of five million copies sold, less than a month after launch.