# Collider shapes

> The different collider shapes available, and how collider shape complexity affects performance.

Colliders are available in different shape configurations. A collider’s shape defines how accurately the collider matches the Mesh shape, and how computationally efficient the collider is.

| **Topic**                                                                                                                                    | **Description**                                                                                                                    |
| -------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- |
| [Introduction to collider shapes](/engine/6000.3/manual/physics-section/physics-overview/collision-section/collider-shapes/introduction.md)  | Overview of the different collider shapes in Unity.                                                                                |
| [Primitive collider shapes](/engine/6000.3/manual/physics-section/physics-overview/collision-section/collider-shapes/primitive-colliders.md) | Primitive collider shapes are built-in, pre-calculated collider shapes in Unity (Box, Sphere and Capsule colliders).               |
| [Mesh colliders](/engine/6000.3/manual/physics-section/physics-overview/collision-section/collider-shapes/mesh-colliders.md)                 | Mesh colliders create collision geometry that matches the shape of their associated Mesh, for extremely accurate collisions.       |
| [Wheel colliders](/engine/6000.3/manual/physics-section/physics-overview/collision-section/collider-shapes/wheel-colliders.md)               | Wheel colliders use raycasting to form wheel-shaped collision geometry with suspension and tyre-based friction.                    |
| [Terrain colliders](/engine/6000.3/manual/physics-section/physics-overview/collision-section/collider-shapes/terrain-colliders.md)           | Terrain colliders create collision geometry that matches the shape of their associated Terrain, for extremely accurate collisions. |
| [Compound colliders](/engine/6000.3/manual/physics-section/physics-overview/collision-section/collider-shapes/compound-colliders.md)         | Compound colliders are a combination of multiple other colliders, which together have a single center of mass.                     |