Arcade machines have evolved to include player-created content, but ensuring its validity is crucial for security and fairness. Here’s how they handle it:

1. Pre-Submission Checks: Many arcade systems require players to submit content for review before it goes live. Automated tools scan for inappropriate material, bugs, or exploits.

2. Community Moderation: Some platforms rely on player communities to flag or report problematic content, which is then reviewed by moderators.

3. Sandboxing: Player-created content often runs in a restricted environment to prevent malicious code from affecting the main system.

4. Checksums & Signatures: Digital signatures or checksums verify that content hasn’t been tampered with after approval.

5. Size & Complexity Limits: To prevent crashes or performance issues, arcade machines may impose limits on file size or scripting complexity.

These methods balance creativity with security, ensuring a safe and enjoyable experience for all players.