Instances are created from Objects and, once created, they can be changed and manipulated through GML code and DnD™ actions. The following sections deal with the internal built-in variables that all instances have as well as the functions that are specifically for finding and manipulating instances along with the routines available in GameMaker Studio 2 for limiting the amount of "active" instances in a room at one time.

You can find out more from the following sections:

1. Instance Variables
2. Instance Functions
3. Deactivating Instances

Note that there are two additional built in variables (these are global scope variables) and one function related to using instances which can be used to retrieve certain details:

1. instance_id
2. instance_count
3. instance_id_get