Ctrl+Shift+Click Destroy nearest particle or
detonate Black Hole.
Scroll Add or remove particles. Mass is perfectly
conserved otherwise.
Collapse & Growth 5 particles of the same color gathering tightly
collapse into a Black Hole. Black Holes absorb their own kind to grow and violently repel the
opposite color. If a hole starves, it melts back into particles.
Collisions Identical Black Holes merge. Opposite ones annihilate in a
massive Big Bang.
Overgrowth If a Black Hole grows large enough to touch itself across
the Toroidal space boundaries, it triggers an instant collapse.
Toroidal Space Particles crossing the screen edge teleport to the
other side and invert their color.