Mancopter is a side view horizontal game where the screen scrolls from right to left when you move, as you control your hero flying a primitive helicopter powered by pedal-power for a race over the ocean. You must fly and pass as many other competitors as you can to get from the start-line to a finish-line a long distance away. To fly your helicopter you keep pressing the fire button to stay airborne and press left to move along the screen. If you stop pressing the fire button then you fall downwards towards the water, if you stop pressing left then your momentum keeps you going until you slowly come to a halt. The race is timed and you start with seventy seconds, which decreases as you race, but passing buoys gives you forty extra seconds.
The other competitors fill the skies, and you can avoid them or hit the top of their helicopter, which sends them into the water, but if you are hit from above then you fall into the sea. You are carrying four fish, and every time you hit the water, a whale appears, lifting you onto its head, at the loss of a fish, and if you have no more fish when you hit the water, a shark appears, eating you. Pelicans fly in the air from left to right, and if they have a fish in their mouth, then when hit, gives you the fish, and you can carry up to eight. Hit a pelican without a fish, and it takes one of yours, or if you hit one without carrying any, then you hit the water and get eaten once again.
Other creatures to avoid are squids, dodos, and storm clouds that release lightning, which causes you to lose a fish. If you run out of time, you lose a fish, but you're given five seconds to try to reach a buoy. Trees make an appearance, and you're unable to pass the leaves and branches, so you must fly underneath while avoiding hitting the water. During the race, rafts appear, and when landed on, give you bonus points for time remaining and competitors passed. Hitting a competitor into the water doesn't count as a pass.