[Kerbal Space Program] I try to open the game on Mac and the following message comes up: “KSP can’t be opened because it is from an unidentified developer” Jenn L. October 08, 2020 21:30 Updated Follow You will need to change your Gatekeeper settings on your Mac. You can follow the instructions here to attempt this. If you are still encountering issues, please submit a support ticket. Related articles [Kerbal Space Program] I try to open the game on macOS and I either get a black screen or a lot of stuttering. How can I play KSP on macOS? [Kerbal Space Program] The game for Mac just bounces on the dock, but never actually opens. What now? [Kerbal Space Program] How do I update the game to the most recent version? [General] Refund and Cancellations Policy Comments 0 comments Article is closed for comments.