Shellshock

From the Game Manual

You are now a rookie member of the most badass mercenary tank force you ever met - DA WARDENZ. The object of the game is to serve a tour of duty with these five fly gus, proving yourself, in their and your own eyes, as you battle your way through a series of missions in a variety of fictionalised, real world locations. From the freezing forests of Mostvia Vastka, to the steaming Paranaguan jungle...Armed with only an M-13 Predator battletank and several thousand pounds of heavy duty ordanace, you're gonna find your skills tested to the max. As the tour of duty progresses...you'll get the oppurtunity to upgrade your tank ad improve it's performance, armor and armaments.