Merge Gun Zombies

Merge Gun Zombies is merge and idle kill zombies game. You can play everywhere ,every time. It is a boring killer game.
HOW TO PLAY:
1 - Tap the button to get the box
2 - Click on the box to open the box to get the weapon
3 - Merge two of the same weapons to get a new weapon
4 - Merge and make more and more weapons
Collect all weapons and become the best zombies killer in Merge Gun Zombies.
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Enjoy your time.