Escape from the Planet of the Robot Monsters
Playing as either Jake or Duke, you must rescue Professor Sarah Bellum and the enslaved hostages before they are turned into Robo-Zombies. Find and break into the food and bomb lockers to get special weapons to help you destroy the evil Reptilons.
The object of the game is to progress through the factories of Planet X rescuing the hostages and destroying their Reptilon guards. To activate the elevators you encounter, find the power switch and turn it on. This will allow you to reach the "Port-O-Matic" and exit the level.
Around the complex of factories you will find lockers that contain food, extra energy, more bombs or sometimes special weapons that will increase your chances of survival. When destroyed, some of the Reptilons will leave behind green crystals that enhance your "ray power". The more crystals you collect, the more devastating your weapon will become.
To rescue the hostages simply run into them and they will be beamed aboard your rescue ship which is orbiting Planet X. Some of the hostages, however, have been imprisoned in glass cases. To unlock the cases you must find the computer console that controls them and destroy it with your ray gun.
Every three levels you will encounter an Evil Reptilon which can only be destroyed by continuous shooting and bombing. Watch out - each Reptilon has its own form of defence! At the end of each factory, you will be shown a bonus screen where you are rewarded for each freed hostage on that level. If you have rescued a full shuttle load of hostages you are awarded an extra bar of energy.