Codex Gamicus

PlayStation Network
Basic Information
Sony Computer Entertainment
Sony Corporation
Digital Platform
PlayStation 3, PlayStation 4, PlayStation Vita and PSP Go
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PlayStation Network (also abbreviated as PSN) is an online digital platform created by Sony Computer Entertainment, and is used on numerous Sony devices, primarily the PlayStation series. A PlayStation Network account is required to use network features, such as online play. The PlayStation Network also includes access to services such as the PlayStation Store.

In 2010, Sony released an initially optional premium service, PlayStation Plus. This granted users access to several features such as free games, exclusive content (such as demos and themes), an auto-update feature and a cloud save backup service similar to Steam Cloud.

Later, PlayStation Plus was re-introduced as a service somewhat mandatory for online play on the PlayStation 4. Some games do not require PlayStation Plus for online play, or allow restricted access to online features. Only one membership per PlayStation 4 system is required for access to full online play.