gameProperties

A set of key-value pairs that can store custom data in a game session. For example: {"Key": "difficulty", "Value": "novice"}. You can use this parameter to modify game properties in an active game session. This action adds new properties and modifies existing properties. There is no way to delete properties. For an example, see Update the value of a game property.

• Avoid using periods (".") in property keys if you plan to search for game sessions by properties. Property keys containing periods cannot be searched and will be filtered out from search results due to search index limitations.

• If you use SearchGameSessions API, there is a limit of 500 game property keys across all game sessions and all fleets per region. If the limit is exceeded, there will potentially be game session entries missing from SearchGameSessions API results.