PICO PARK: Classic Edition, the original installment that spawned the cooperative puzzle series PICO PARK—best known today on Nintendo Switch—has been converted into a free title on Steam.

Released in 2016, PICO PARK: Classic Edition is the forerunner to what is now a two-entry PICO PARK series and the first game to prove the series’ hallmark of tight, teamwork-heavy play. Functionally, it’s the same game as the first PICO PARK, but it’s a traditional couch co-op title that does not support native online multiplayer. That said, with Steam’s Remote Play Together feature added post-launch, you can effectively play it online.

The catch? The developer TECOPARK seems to have misunderstood how Steam’s pricing system works.

According to TECOPARK, the plan was to offer the game free for a limited time and then switch it back to a paid product. However, they failed to realize that if you simply set the price to free—without using the proper alternative method—you can’t revert it to a paid SKU afterward. As a result, PICO PARK: Classic Edition ended up in a state where it could no longer be switched back to paid.

Given that the sequel is already being sold on Nintendo Switch and that Classic Edition is a nine-year-old release, TECOPARK decided to make the game free forever and announced its permanent free status in a public notice.

This article was translated from the original that appeared on INVEN.