If the last update was 4 years ago, it might be broken. Verified games have recent "commits" (within 6 months). Look for a yellow dot or recent date.
Many popular multiplayer and simulation games have dedicated GitHub repositories or mirrors: bobeff/open-source-games - GitHub github games unblocked all games verified
A: Use the "Period Key" trick mentioned above. Alternatively, many verified repos work via raw.githubusercontent.com . Paste the raw link into a new tab. If the last update was 4 years ago, it might be broken
Examples of repo names often associated (not endorsed or verified): github games unblocked all games verified
If a specific link gets blocked, you can "Fork" the repository to your own GitHub account. This creates a personal copy with a unique URL that is unlikely to be on any blocklist.