Basically, you control a soldier going through the battlefield, using a gun, hand grenades, and a couple of tanks to annihilate the enemies and take over their fortress. This goes on forever, with the enemies becoming a little faster and smarter with each victory you gain.
In this hack I have changed the title screen and code - now, each enemy soldier goes on tank.
Front Line (Japan).nes - NOINTRO
CRC32: 44D123A4
MD5: AB4E56CD24F931F526A06C22DB43F1DF
SHA-1: 79C5F8D187B8FECC95CE5978F7BC7F6014341ECB
SHA-256: 2AA4EE9C586079402204431E858EFEF2A1529195C35867EC62D9D4A6D83C8889