Mergelaxy: Planet Merge
Drop physics puzzle in space
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Drop planets, watch them merge, and chase the Big Bang. A new daily challenge every day — the same field for every player, and one shot to top the board.
Drop a planet. Watch two of a kind become something bigger. Keep going until the bowl runs out of room — or until two black holes touch and the whole field goes up in a Big Bang.
Mergelaxy is a physics merge puzzle built on a space-sized chain of eleven bodies. Cosmic dust becomes a meteorite. A meteorite becomes an asteroid, then a moon, a rocky world, an ocean world, a gas giant, a brown dwarf, a star, a supernova — and finally a black hole. Merge two black holes and you get the moment everyone plays for: a Big Bang that clears the field and pays out big.
EASY TO START, HARD TO PUT DOWN
Slide your finger, let go, and physics does the rest. There is nothing to learn and no tutorial to sit through — your first drop is the tutorial. Chain merges together and the combo multiplier stacks, so one well-placed body can cascade into a run you never saw coming.
A NEW CHALLENGE EVERY DAY
Every day brings one challenge field, generated from the date and identical for every player in the world. Same bodies, same order, same luck — the only variable is you. Play it, post your score, and come back tomorrow to keep your streak alive. Miss a day and a streak freeze can cover for you, if you have one saved.
CLIMB THE BOARDS
Game Center leaderboards for your all-time best, your total stardust, and each day's challenge. Five achievements to unlock along the way, including your first black hole and your first Big Bang.
YOUR PROGRESS FOLLOWS YOU
Best score, stardust and streak sync through iCloud, so the game picks up where you left it on every device signed in to your Apple Account. No account to create, no email to hand over.
BUILT TO FEEL GOOD
Sixty frames a second, weighty collisions, a particle burst on every merge, and haptics tuned to the size of whatever just formed. Plays offline. Plays in English, Ukrainian and German.
MERGELAXY+
An optional subscription for players who want more room to play:
• Unlimited daily challenge attempts
• Shared with your family through Family Sharing
Mergelaxy+ is comfort and access — never a better score. Nothing in the subscription helps you win, so the leaderboards stay honest.
Mergelaxy+ is available monthly or yearly, with a 7-day free trial for new subscribers. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and you can manage or cancel it any time in your Apple Account settings.
Privacy Policy: https://hollybyte.com/mergelaxy/privacy.html
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Space music. A calm ambient soundtrack now plays in the menu and during games. It falls silent while your own music or a podcast is playing, and it has its own Music switch in Settings — sound effects stay independent.
• A Back to menu button on the result screen — you can now leave an endless game without restarting the app.
• Launch animation: the planets are smooth again, with no circle inside a circle.
Thank you for playing! Tell us what to build next: https://hollybyte.com/mergelaxy/support.html
The developer, Oleksandr Nesterov, 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:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Oleksandr Nesterov
- Size
- 6.2 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, German, Ukrainian
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Mergelaxy+ Yearly $24.99
- Mergelaxy+ Monthly $3.99
- Copyright
- © 2026 HollyByte
