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Nov 7, 2026

How duels work: same game, one try

Cosmo Merge is a planet merge game, and its duels are built for friends who are never online at the same time.

How a duel works

  • Create a duel and share the link, before or after you play.
  • Your friend opens it and gets the exact same game as you.
  • Each of you plays when you can, within 48 hours.
  • You get one try, with no revive. The highest score wins.
  • Whoever plays second sees the result right away, with a rematch button.

No retry by quitting

If quitting a bad game gave you another try, duels would be pointless. So the app saves your progress every 2 seconds, and if a run is left unfinished, it sends that score the next time you open the game.

I also tried group duels for up to 8 players, then went back to 1 vs 1.

Also fixed

In recent updates, long rewarded videos stopped counting as failed after 15 seconds, and the continue button now appears even if the ad loads after the game ends.

The demo on this page is the core game. Duels and the world leaderboard are in the Android app on Google Play.

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