The PlayStation Network (PSN) is down. That means all of its online services, such as account management, the PlayStation Store, and gaming and social content, are unavailable to players, leaving only offline services in effect. PSN has been down for more than six hours, interrupting online gaming for many, including the highly anticipated open beta for Marvel Tōkon: Fighting Souls, which was set to begin today. With PSN down, PlayStation players are unable to check out the PlayStation 5 console-exclusive title.…