About Cowboys vs. Martians
Cowboy went on a spirited steed to overtake his farm and discovered on the lands aliens - aliens from outer space. The Martians have landed on the planet in order to capture it, they were looking for uninhabited areas for the construction of fortifications and they succeeded. Cowboy did not like it, he decided to destroy the Martian landing, and you will help him. Shoot, but save ammo, try one shot to destroy the maximum number of enemies.