Instances are created from objects and, once created, they can be changed and manipulated through GML code and D'n'D actions. The following sections deal with the internal variables that all instances have, the functions that are specifically for finding and manipulating instances, and the routines available in GameMaker: Studio for limiting the amount of "active" instances in a room at one time.
Note that there are two additional built in variables related to using instances which can be used to retrieve certain details: