# Particle System module component reference > Reference for the property modules that define particle behavior and appearance. The [Particle System](/engine/6000.3/manual/visual-effects/particle-systems/class-particle-system.md) component has a powerful set of properties that are organized into modules for ease of use. This section of the manual covers each of the modules in detail. | **Topic** | **Description** | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [Activate and access component modules](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/activate-access.md) | Activate component modules on a Particle System to access and change the properties of particles and emitters. | | [Main module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-main-module.md) | Explore properties on the Main module, to configure the initial state of new particles. | | [Emission module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-emission-module.md) | Explore properties on the Emission module, to configure the rate and timing of particle emissions. | | [Shape module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-shape-module.md) | Explore properties on the Shape module, to configure the volume or surface that the Particle System uses to emit particles, and the direction of the start velocity. | | [Velocity over Lifetime module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-vel-over-life-module.md) | Explore properties on the Velocity over Lifetime module, to configure particles that change velocity over time. | | [Noise module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-noise-module.md) | Explore properties on the Noise module, to configure the turbulence of particles as they move. | | [Limit Velocity over Lifetime module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-limit-vel-over-life-module.md) | Explore properties on the Limit Velocity over Lifetime module, to configure particles that reduce in velocity over time. | | [Inherit Velocity module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-inherit-velocity.md) | Explore properties on the Inherit Velocity module, to configure the velocity of particles from sub-emitters to match the velocity of the parent particle. | | [Lifetime by Emitter Speed module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-lifetime-by-emitter-speed-module.md) | Explore properties on the Lifetime by Emitter Speed module, to configure the initial lifetime of each particle based on the speed of the emitter when the particle spawns. | | [Force over Lifetime module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-force-over-life-module.md) | Explore properties on the Force over Lifetime module, to configure simulated physics forces that affect the movement of particles over time. | | [Color over Lifetime module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-color-over-life-module.md) | Explore properties on the Color over Lifetime module, to configure particles that change color over time. | | [Color by Speed module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-color-by-speed-module.md) | Explore properties on the Color by Speed module, to configure particles that change color based on their speed. | | [Size over Lifetime module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-size-over-life-module.md) | Explore properties on the Size over Lifetime module, to configure particles that change size over time. | | [Size by Speed module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-size-by-speed-module.md) | Explore properties on the Size by Speed module, to configure particles that change size based on their speed. | | [Rotation over Lifetime module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-rot-over-life-module.md) | Explore properties on the Rotation over Lifetime module, to configure particles that change rotation over time. | | [Rotation by Speed module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-rot-by-speed-module.md) | Explore properties on the Rotation by Speed module, to configure particles that change rotation based on their speed. | | [External Forces module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-ext-force-module.md) | Explore properties on the External Forces module, to configure the effect of external physics forces such as wind zones and force fields on particles emitted by the system. | | [Collision module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-collision-module.md) | Explore properties on the Collision module, to configure particle collisions. | | [Triggers module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-triggers-module.md) | Explore properties on the Triggers module, to configure particles that act as triggers. | | [Sub Emitters module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-sub-emit-module.md) | Explore properties on the Sub Emitters module, to configure particles that emit other particles. | | [Texture Sheet Animation module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-tex-sheet-anim-module.md) | Explore properties on the Texture Sheet Animation module, to configure particles that use a texture grid to create animation frames. | | [Lights module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-lights-module.md) | Explore properties on the Lights module, to configure real-time lights on particles. | | [Trails module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-trails-module.md) | Explore properties on the Trails module, to configure trails on particles. | | [Custom Data module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-custom-data-module.md) | Explore properties in the Custom Data module, to configure custom data formats in the Editor to attach to particles. | | [Renderer module reference](/engine/6000.3/manual/visual-effects/particle-systems/particle-system-modules/part-sys-renderer-module.md) | Explore properties on the Renderer module, to configure how a particle’s image or mesh is transformed, shaded and overdrawn by other particles. | | [Particle System Force Field component reference](/engine/6000.3/manual/visual-effects/particle-systems/configuring-particles/class-particle-system-force-field.md) | Explore the properties on the Particle System Force Field component, to apply forces to particles. |