The gameplay is as follows: seven or eight enemies at a time come together from the left, slowly move to the right, as long as they touch the right bank 20 times after the game over. In order to block the enemy, the player must quickly cover some batteries, the fun point is that the enemy encountered the battery to automatically detour, so the battery itself can be used as a "wall" to block the enemy, we take the battery to make a "maze", to block a batch of different formations of the enemy attack. The players who survived the most in the end were all due to the design of some super powerful mazes, so that all kinds of enemy formations were destroyed by this maze and carefully designed gunfire before they reached the right bank. The difference between this game and many flash games in the street is that it is not based on "speed", do not have to make a decision in a very short time, you can slowly enjoy the fun of "chess", spend some time thinking about what kind of maze to use to block the enemy, and then when you see the maze designed with great difficulty to annihilate the enemy in it. The sense of achievement may be very much like when I was a child, the table ants, glue into a maze, see the ants in the drill to drill to find the exit; It is also much like digging dirt in a waterlogged playground after a typhoon, digging out a river, with tributaries and "DAMS".