Orbit Collapse vs Black Hole Gravity

Merge planets. Birth black holes. Orbit Collapse is a cosmic twist on the merge-puzzle game you already love — simple to pick up, endlessly satisfying to master. HOW TO PLAY Drop planets into orbit and merge two of the same kind to create the next one up — from drifting Stardust all the way to a collapsing Black Hole. Chain merges together for massive combo bonuses, but watch the danger line: let the board overflow and it's game over. FROM STARDUST TO SUPERNOVA Climb a twelve-tier cosmic ladder — Stardust, Asteroid, Comet, Moon, Mars, Venus, Earth, Jupiter, Saturn, the Sun, Supernova — and finally, a Black Hole. Reach it and it doesn't just vanish: it stays on the board and keeps devouring, growing more powerful the longer it survives. THREE COSMIC POWERS Earn power charges through combos and use them when you need a save (or just want to show off): • Mini Black Hole — devours nearby planets, growing as it feeds • Alien Strike — mark multiple planets and watch them zapped in sequence • Cosmic Shuffle — clears the board and rains it all in fresh A NEW CHALLENGE EVERY DAY The Daily Challenge gives every player on Earth the exact same board — same drops, same meteor showers — all day long. Finish a run to keep your streak alive, and compare your score on a leaderboard built just for that day. CHASE THE LEADERBOARDS Compete on Game Center leaderboards for your all-time best score and the daily board. A DARK, ATMOSPHERIC SOUNDTRACK An original synthesized score sets the mood — sustained analog pads, deep bass, and a driving low-register pulse. Play with the volume up. Orbit Collapse is free to play, with optional ads that never interrupt a run in progress, and a one-time Remove Ads option for players who want it uninterrupted.

Black Hole Gravity is a quiet arcade about one instrument — light — and the one thing it can do here: bend around a black hole. You are the last keeper of the horizon. Drag to bend the beam: far from the hole it barely curves; close to the photon sphere it wraps around once, twice, three times before it leaves. Tap to fire a pulse along that path. Where it lands, matter moves. THREE ACTS I · THE WATCH — Worlds are sliding toward the horizon. Push them clear with light and hold the line for as long as you can. Every world you lose feeds the hole and makes it grow. II · THE NIGHT — The stars are out. Nothing to guard, nowhere to hurry. Bend the beam, watch it wind, and score by how far it turns. III · THE SOWING — The universe is cold. Push the last worlds into the singularity, shatter them into falling fragments, and grow the hole until it collapses into a new Big Bang. DEEP TIME One long run through five scales — from asteroids to whole galaxies — each around a real black hole: Cygnus X-1, Gaia BH3, Sagittarius A*, M87*, TON 618. Your enemy is Hawking evaporation. Five eras of the far future set the difficulty, and every singularity you reach births a daughter universe with slightly different laws. HONEST PHYSICS • The lensed sky and the Einstein ring are computed from the real mapping, not painted. • Winding the beam with the hole's spin draws on its rotation — superradiance (Zel'dovich 1971; Press & Teukolsky 1972). Each amplified shot slows the hole; accretion spins it back up. • Mass, Schwarzschild radius, Hawking temperature and evaporation time are shown live, computed from the hole you are playing. • Bodies that leave the screen are never teleported back: an escaping one is gone, a bound one returns on its own orbit — the edge marker tells you when. • Nothing changes under your finger. While you aim, the world waits. CONTROLS Adaptive aiming: the gear ratio next to the ship shows how fine your aim is — the closer to the capture boundary, the finer the control, so a three-winding shot is as steady as a straight one. A hardcore scheme with a log slider is there for those who want it. Two beacons, one under each thumb. A procedural soundtrack, four tracks, made from the same math. Sound designed for headphones: low pulses and singing bowls, nothing arcade. No ads. No tracking. No account. Works offline.