Table of Contents The Base object Displacement Visibility Layers and cameras Z Order Objects Position Variables The Base object GDevelop provides many built-in features and official extensions. For example, games automatically use the Base object extension, which provides actions, conditions, and expressions for all objects. Displacement Actions belonging to this category allow to apply forces of an object and move it. The corresponding conditions allow to test if an object has stopped, if it is moving and where to (for example towards another object, or in a particular direction). Visibility You can hide and show objects thanks to the actions of this category. Layers and cameras These actions and conditions allow to test and modify layers. Z Order These actions and conditions allow to test and modify the Z order of an object. Objects These actions and conditions allow to create, delete, pick an object at random or duplicate an object. Position These actions and conditions allow to change an object's position. Variables These actions and conditions allow to test and modify variables of objects.