Core Keeper is free to play on Steam this weekend, with a 6-off autumn sale until October 23

Pugstorm and Fireshine Games are inviting players to try the full version of Core Keeper free on Steam this weekend, running until the early hours of October 13. The free weekend includes the new Riders of the Underground update, which adds rideable mounts and a grappling hook, and supports 2 to 8-player online co-op. The game is also 6-off in the Steam autumn sale at 45.6 yuan until October 23, and trial progress carries over to a purchase.