Urknall: Planet Merge

Physics puzzle, no ads

Only for iPhone

$0.99 · Designed for iPhone. Not verified for macOS.

iPhone

Drop planets into the jar and merge two equal ones into a bigger one. From stardust to the Sun. Buy once, play forever: no ads, no subscription. Two equal planets. One pop. One bigger planet. Urknall (German for "Big Bang") is a relaxing physics puzzle for any spare minute. Drop planets into the jar, aim carefully and merge two equal ones into the next bigger one. Stardust becomes a comet, a comet becomes a moon, and one day, if you plan well, the Sun. And when two suns collide? Supernova! EASY TO PLAY, HARD TO MASTER • Drag to aim, let go to drop • 11 planets from stardust to the Sun • Real physics: planets roll, stack and push each other around • If the jar overflows, the round is over MADE FOR "JUST ONE MORE ROUND" • Combos up to ×5 for quick merges • A supernova flash when two suns collide • Personal best and a Game Center leaderboard • Challenge friends with your score BUY ONCE, DONE • No ads, ever • No in-app purchases, no subscription • No account, no data collection • Works offline, even on a plane With cute planet faces, juicy sounds and haptics. Plays perfectly with one thumb.

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The developer, Kevin Maurice Engelhardt, 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 Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    Seller
    Kevin Maurice Engelhardt
    Size
    2.2 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.
    Languages
    English and German
    Age Rating
    4+
    Copyright
    © 2026 EngelService Leipzig
  • Privacy Policy

    • Supports

    • Game Center

      Discover new games and play with friends.

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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