AWS SDK Version 3 for .NET
API Reference

AWS services or capabilities described in AWS Documentation may vary by region/location. Click Getting Started with Amazon AWS to see specific differences applicable to the China (Beijing) Region.

Creates a multiplayer game session for players in a specific fleet location. This operation prompts an available server process to start a game session and retrieves connection information for the new game session. As an alternative, consider using the GameLift game session placement feature with

with StartGameSessionPlacement, which uses FleetIQ algorithms and queues to optimize the placement process.

When creating a game session, you specify exactly where you want to place it and provide a set of game session configuration settings. The fleet must be in ACTIVE status before a game session can be created in it.

This operation can be used in the following ways:

If successful, a workflow is initiated to start a new game session. A GameSession object is returned containing the game session configuration and status. When the status is ACTIVE, game session connection information is provided and player sessions can be created for the game session. By default, newly created game sessions are open to new players. You can restrict new player access by using UpdateGameSession to change the game session's player session creation policy.

Game session logs are retained for all active game sessions for 14 days. To access the logs, call GetGameSessionLogUrl to download the log files.

Available in Amazon GameLift Local.

Learn more

Start a game session

Related actions

CreateGameSession | DescribeGameSessions | DescribeGameSessionDetails | SearchGameSessions | UpdateGameSession | GetGameSessionLogUrl | StartGameSessionPlacement | DescribeGameSessionPlacement | StopGameSessionPlacement | All APIs by task


For .NET Core this operation is only available in asynchronous form. Please refer to CreateGameSessionAsync.

Namespace: Amazon.GameLift
Assembly: AWSSDK.GameLift.dll
Version: 3.x.y.z


public abstract CreateGameSessionResponse CreateGameSession(
         CreateGameSessionRequest request
Type: Amazon.GameLift.Model.CreateGameSessionRequest

Container for the necessary parameters to execute the CreateGameSession service method.

Return Value
The response from the CreateGameSession service method, as returned by GameLift.


ConflictException The requested operation would cause a conflict with the current state of a service resource associated with the request. Resolve the conflict before retrying this request.
FleetCapacityExceededException The specified fleet has no available instances to fulfill a CreateGameSession request. Clients can retry such requests immediately or after a waiting period.
IdempotentParameterMismatchException A game session with this custom ID string already exists in this fleet. Resolve this conflict before retrying this request.
InternalServiceException The service encountered an unrecoverable internal failure while processing the request. Clients can retry such requests immediately or after a waiting period.
InvalidFleetStatusException The requested operation would cause a conflict with the current state of a resource associated with the request and/or the fleet. Resolve the conflict before retrying.
InvalidRequestException One or more parameter values in the request are invalid. Correct the invalid parameter values before retrying.
LimitExceededException The requested operation would cause the resource to exceed the allowed service limit. Resolve the issue before retrying.
NotFoundException A service resource associated with the request could not be found. Clients should not retry such requests.
TerminalRoutingStrategyException The service is unable to resolve the routing for a particular alias because it has a terminal RoutingStrategy associated with it. The message returned in this exception is the message defined in the routing strategy itself. Such requests should only be retried if the routing strategy for the specified alias is modified.
UnauthorizedException The client failed authentication. Clients should not retry such requests.
UnsupportedRegionException The requested operation is not supported in the Region specified.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

See Also