oop.

Welcome to the oop.

oop is a relaxed and comfortable puzzle game.
Succinct pictures and play methods, using the chain reaction, experience the pleasant experience brought by the game.

Here are some squares with different numbers.

Give play to your wisdom, arrange the order,eliminate all square and clear up all the levels! Believe that smart you can do it!

How to play:
- Click on the square and add the number.
- The square with the number 4 will disappear when clicked and bullets will be fired around it.
- A square hit by each bullet adds one to the number.
- There are rotating baffles to change the direction of the bullet; black holes to swallow the bullet; and shells to restrict the bullet's entry and fire.
- Causing chain reaction in limited steps, eliminating all square tablets

Characteristic
- Succinct pictures and Play Method
- Challenging levelss
- Perfect prompting system
- The current version has 124 interesting checkpoints
- A comfortable chain reaction.

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