MP4 -- A Simple Particle System -- danasim2
Rendering Parameters for Background Blank Mountain Beach City
Particle Options --Press "r" to reset to original parameters

Number of Particles
-- Press "p" to add more! Press "o" to remove.
-- Click "c" to clear out all particles

Drag Value
-- Press "l" to decrease drag. Press "k" to increase.

Particles are random colors.
Or set a uniform color: