You can use the free tank to attack the video slot, so you can practice without risk, but obviously, there is no real cash win unless you actually make a real cash bet. Any 4 scatter values are 10 times the bet, and when 5 or more of the symbols fall in a spin, the highest bonus of 100 times is paid.
When 3, 4 or 5 reels of a payline land, each pack of cigarettes or bullets will pay a bet equal to 3x, 10x or 50x, while petrol cans and tank traps are each worth 5x, 25x or 200x.