If you've had issues with the demo not launching on its latest versions, that should be fixed now! I apologize for the inconvenience and hope you're looking forward to the full release.
Quick Fix: Demo Launch Issue
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Source: Steam Community (opens in a new tab)
If you've had issues with the demo not launching on its latest versions, that should be fixed now! I apologize for the inconvenience and hope you're looking forward to the full release.