Galaxy Merge is a relaxing, hands-on gravity sandbox — a pocket planetarium where you build the cosmos with your fingertips.
Drag glowing planets, stars, and comets onto the night sky, fling them together, and watch real-feeling gravity take over. When two worlds collide they merge and climb the cosmic mass ladder: asteroids and comets build planets, planets grow into stars, stars swell into blue giants, and enough mass collapses into a neutron star — or a black hole that devours everything around it.
There's no timer, no score, and no way to lose. Just a calm, endlessly playable universe to experiment with.
CREATE A UNIVERSE
• Drag and fling planets, dwarf stars, giants, comets, and more
• Watch bodies orbit, collide, and merge in real time
• Grow your creations all the way up to a supermassive black hole
REAL-FEELING PHYSICS
• Multitouch gravity — every object pulls on every other
• Stars are born, burn, and die: supernovae, neutron stars, white dwarfs
• Planets warm and cool by starlight; comets deliver water to seed life
COSMIC SPECTACLE
• Light-bending black holes
• Supernova explosions, shockwaves, and glowing nebulae
• Lock any object in place and orbit others around it
BEAUTIFUL & LIGHTWEIGHT
• Every planet, star, and effect is drawn procedurally — crisp on any screen
• Tiny download, works offline, no account or sign-up
Galaxy Merge is free to play. A couple of the most extreme objects — like the Neutron Star and White Hole — can be unlocked by watching an optional rewarded ad; everything else is yours from the start.
Inspired by the touch-table exhibits at science museums and planetariums. Whether you're a space lover, a curious kid, or just want to unwind, there's a whole galaxy waiting at your fingertips.
Pull a planet out of the dock and start merging.
I love this game so much! This game allows you to have so much fun but also to learn a lot about space! I am giving this five stars because I am being very honest and I love this game so much! Please read this before you download it. This game is amazing. You will not regret downloading it!
So good
George Bush 
So good
The Camera — your cosmos just got a lot bigger.
• PINCH TO ZOOM: the world is now three and a half times the screen. Pinch, pan, and drag to explore it — pull out wide for sprawling systems, or dive in close on a single orbit.
• PHOTO MODE: hide the controls, frame your shot, and switch on long exposure to paint light-streak trails. Then share the poster.
• GALACTIC CORE: a new scenario — a supermassive black hole ringed by a hundred worlds, slowly devouring its own disk. Only possible with the new camera.
• DEEP SPACE: layered nebula clouds now drift in parallax behind everything, so the depth is real.
• FOLLOW MODE: lock the camera onto any object and ride along with it.
• 2 NEW CHALLENGES: Galaxy Heart and Wide Cosmos — 23 in all.
• Plus a redesigned dock that finally fits landscape and iPad.
Tap any object to learn the real astrophysics behind it. Thanks for playing!
Version 2.0
The developer, Adam Drummond, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Location
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More