Contra (2 Players)

From MobyGames:
'In the year 2631, a small meteorite has fallen into the Galuga archipelago, located 20km northeast off the coast of New Zealand. Two years later, a terrorist group known as Red Falcon has seized the island in preparation for an alien invasion. The earth's marines sent two members of their elite Contra unit, Bill Rizer and Lance Bean, to neutralize the terrorists.'

Played in 2 Player mode where I'm player 1 and 18Delta is player 2.