Lead the lone soldier over hill and dale, wary always of the seemingly ubiquitous enemy. As the name may imply, Sgt. Rock: On the Front Line is a Game Boy Color conversion of the early '80s arcade game Front Line that features DC Comics' war hero Sgt. Rock. From a top down perspective, players guide the hero through the wilderness, gunning down enemy foot soldiers and heaving grenades at enemy tanks. Sgt Rock can hop in an empty tank if he's lucky enough to find one, but he'll want to bail out before the vehicle takes too much damage. Guide the grizzled Sgt Rock all the way to the enemy fortress and destroy it to save the day and keep the world safe for freedom and the American way.