Hammer Away is an unreleased arcade shoot ‘em up game for the System-18, which was being developed by Santos in partnership with SEGA in around 1990-1991. It was intended to be launched in ’91, but ultimately never made its way to arcades for unknown reasons.
The title was a military-themed vertical scrolling shoot ‘em up in which the player controls a helicopter, facing off against all manner of hostile army forces, like stationary turrets, tanks, battleships and other choppers. There were two modes of attack available: rapid-fire machine guns for ground targets and missiles for air ones, in addition to a powerful bomb attack which instantly wipes the screen of all enemies.
Despite never being released officially, a prototype version of the game was recovered in Portugal by three savvy arcade fanatics towards the start of November 2014.
A month later, the ROM was extracted and made readily available online. There is a total of five different levels in the build found, including environments such as a railroad and an oceanic section. There is a checkpoint system in place and in the event that you lose a life, you are sent back to one of these; as opposed to resetting the game. Once the five stages are over, the game restarts itself from the opening stage.
Images (Courtesy of Sudden Desu):