Front Line is a military combat-themed arcade game released in 1982 by Taito Corporation. It was one of the first video games to feature a ground combat theme and grenades. Military-oriented video games of the early 1980s usually involved vehicular combat, such as tanks, but did not include infantry. The original arcade version consists of a joystick, a single button (other than the 'player one' and 'player two' start buttons), and a rotary dial that can be pushed in like a button, which fires the weapon. The single button is used to throw grenades, and to enter and exit the tank.
Playing as a lone soldier, the player's ultimate objective is to lob a hand grenade into the enemy's fort by first fighting off infantry units, then battling an armada of tanks before finally reaching the opponent's compound. The player begins with two weapons: a pistol and grenades. The ammunition supply for both items is unlimited, so there is no need to acquire ammunition during gameplay. Once the player has advanced far enough into enemy territory, there's a 'tank warfare' stage in which the player commandeers tanks to fight off the enemy.
There are two types of tanks available: a light tank armed with a machine gun and a heavy tank armed with a cannon. The light tank is more nimble, but can be easily destroyed by the enemy. The heavy tank is slower, but can sustain one hit from any tank. Once the damaged tank is evacuated, the player can jump back in and resume normal operation without any deadly consequence. If a heavy tank is struck by another tank round, it will be destroyed. With either type of tank, the player must exit the vehicle within a few seconds of being struck by a fatal shot. The tank quickly explodes, and if the player is still occupying it, he loses a life.
The tank battle continues up until the player reaches the enemy's fort. The fort is a brick-barricaded tank which fires mortar rounds while the player attempts to take it out. In order to destroy this tank, the player must toss a grenade over the brick barricade. This requires them to be on foot instead of manning a tank. Once the player has successfully lobbed a grenade into the tank fortress, the tank will explode and an enemy soldier will wave the white flag, signaling surrender. The game then starts over with the infantry level, but enemy soldiers become much quicker and deadlier in successive rounds.
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You can control this game easily by using the keyboard of your PC (see the table next to the game). However, for maximum gaming enjoyment, we strongly recommend using a USB gamepad that you simply plug into the USB port of your computer. If you do not have a gamepad, buy a suitable USB controller in Amazon or in some of your favorite online stores.