ANY CONNECTION between The Covenant, biblical events and good games is totally coincidental.
You must guide your space ship around the caverns, getting out to pick up objects and pieces of covenant which, once fitted together, will save the world from destruction. There is, however, the little problem of the Thingies. They have a sting in their tails which will terminate you instantly.
To destroy the Thingies you must 22 leave your craft, pick up some anaesthetic and hit one of the two creatures. It will then be disabled for a few seconds. Then jump back into the spacecraft and bounce on it to pick it up. Such complex action makes lengthy play impossible.
The Thingies are intelligent and attack as soon as you leave your craft, draining your energy. Getting to the energiser is difficult and once there the Thingies continue their attack.
In the second section you must pass pipes which drip molten lava. There are more Thingies to kill, more covenant to pick up and more sections through which to pass.
Arcade wizards would find it difficult to complete 256 caverns, go through 67 passages and contend with ever-present aliens using just one life.