The Test tab contains tools for gameplay testing.

Simulation

This section allows you to start and stop the simulation of your game.

Icon	Action	Description
	Play	Starts simulating the game and inserts your character. The dropdown lets you select either Play Here which simulates the game from the point you're currently viewing in the game editor window, or Run which will start simulating the game without inserting your character.
	Client/Server	Toggles between client mode and server mode when testing in a "play solo" mode (Play or Play Here). See Articles/game testing|Game Testing for details.
	Pause	Pauses the simulation of the game running but does not reset the state. Pressing Play, Play Here, or Run will resume the simulation.
	Stop	Stops simulation of the game and resets all BasePart|Parts and Instance|Instances to how they were before Play, Play Here, or Run was pressed.

Clients and Servers

This section lets you run a more realistic simulation of the game by creating a virtual server and virtual clients to connect to it.

Icon	Action	Description
	Start	Starts up new sessions of Studio for the server and clients. If the Local Server option is selected, a server session will be created. If None is selected, the Start button will only create players and add them to the currently running simulation. Note that up to 8 players can be selected by choosing the desired option from the second dropdown.
	Cleanup	Closes all simulating client and server sessions of Studio.

Emulation

This section contains emulation options for testing in Studio.

Icon	Action	Description
	Device	Toggles the Device Emulator, letting you see how your game will look on various devices like phones and tablets. Once in emulation mode, you can select from a variety of common devices and screen resolutions.
	Player	Toggles the Player Emulator which lets you emulate various localization and game content policies. See articles/game testing#player-emulator|here for details.

Audio

This section contains audio-related options for testing in Studio.

Icon	Action	Description
	Mute	Toggles whether in-game sounds play in Studio.