In this game, players compete to see how high the gun rises by utilizing the recoil of the bullets fired from the gun.

The timing of firing the bullets is critical.
Fire bullets at the right time, avoid or destroy obstacles that appear during the ascent, and make the gun rise higher.
The number of remaining bullets is also an important factor.
You can increase the number of remaining bullets by hitting the “targets” that appear during the ascent with good timing before you run out of bullets, thus increasing your score higher.