Hello @RickAndTired, this issue is already being tracked in various issue reports like https://github.com/ValveSoftware/csgo-osx-linux/issues/2659 / https://github.com/ValveSoftware/csgo-osx-linux/issues/2815 and/or https://github.com/ValveSoftware/csgo-osx-linux/issues/1757. Closing as a duplicate.
Nothing extracted yet.
Your system information
Please describe your issue in as much detail as possible:
Launching CS:GO opens a black screen window and then it disappears about 20 seconds later
I have already tried "Verify integrity of game files..."
Steps for reproducing this issue: