Similar to a plane or dimension, a mindscape has statistics. The rules for planar traits and stat blocks are under The Planes.

Immersive MindscapeMindscape

FiniteMetamorphicSubjective Gravity
An immersive mindscape forms in the Astral Plane and is shaped purely from the thoughts of its creator. Created of powerful psychic magic, it brings creatures fully into it in their astral forms. Their bodies might remain behind, inactive, or be totally drawn in, depending on the nature of the mindscape. Typically, the mindscape appears to the senses to be a real place, and the inhabitants believe they're physically there.

Though a mindscape is always mutable with subjective gravity, its nature can be veiled, causing inhabitants to be unaware of these properties. Veiled mindscapes typically appear to have normal gravity and morphic traits. Overcoming this appearance to alter the mindscape's structure or use subjective gravity requires realizing it's false. Variations A mindscape might have unbounded scope and its time might be altered, typically to flowing time or timeless. These aren't possible with the basic construct mindscape ritual.