Pixeon

Arrow Keys change color of particles emitted, Z sets all particle velocity to 0, X clears all particles

Use S and F to switch the current effect each takes effect when the mouse button is held

Emitter tool: spawns particles

Gravity tool: pulls in particles

Orbital tool: revolves particles around

Painting tool: pauses simulation and pushes particles a short distance away

Random tool: gives all particles a random angle of movement