Most of the fundamentals of this game work in a similar way to Desert Strike. You pilot a helicopter or a three-barreled tank through 14 increasingly tough multi-phase missions, each of which is preceded by a full briefing and a shopping phase.
Before each phase you can enter the shop and upgrade your weaponry, paying with golden medals gathered during previous phases. Your starting weapons are the chain gun and rockets/tank shells. Every weapon has three upgrade levels. After that, you can decide how much ammunition for each weapon you want to load into your vehicle's weapon bays, switch between the tank and the chopper (which can only be done between phases, and some of them don't give you the choice), choose one of the three special weapons and adjust the fuel/armor/speed characteristics. All these preparations are surprisingly complex for a shooter like this, and a bad configuration can make the game really hard (no fuel in the middle of the desert, or a paper-thin armor are just two...
