Moon Hopper

Essentially a clone of Moon Patrol, Moon Hopper is a speedy scrolling game
where you control an armed moon buggy, rolling across a moon surface guarded
by lots of aliens.

Unlike Moon Patrol, you can’t control the angle of the cannon mounted on the
roof, instead simply firing upwards at all times, with another gun pointing
forward. Apart from the aliens, you also have craters to worry about, which
must be jumped across, and junk getting in your way, which can be shot with
your other cannon.

The scrolling is variable, which means that you can speed up your vehicle to
avoid enemy fire. A meter at the bottom shows how far along a level you have
come.

Moon Hopper