particle field 3D

no empty space — every point is matter

water — tears, then beads back
dust — scatters & lingers
plasma — swirls & pushes back
land — solid, you bump off it
air — invisible, glows when squeezed
Fly into a cloud: tiny particles get shoved, the local crowd thins, and the medium tears. Each type carries itself; density is just how many share a spot.
surrounding medium
click to fly  ·  WASD move · mouse look · space/shift up·down · wheel speed
gamepad: left stick move · right stick look · RB / LB up·down · RT boost