They see me Sliming

The evil genius, Dr. Drillinski, just lost contact with his huge drilling machine that he was using to reach the center of the earth! Drillinski orders his crew of slimy minions on a mission to retrieve his esteemed machine of drilling despair. You control those adorable little villains in the search for the machine down through the holes and mines it has opened. Be economic and smart to plot the best route!