Bug Island is a island full of bugs and the perfect place for Michelle, who is majoring in insect physiology, to work on a report for school. Along come Mike, the typical confident college playboy and Ray, a freshman in college. Arriving on the island, Mike and Ray fight over Michelle who then runs off into the foggy distance and is nowhere to be found. Now Ray needs to find Michelle and get off the island in one piece.
The player takes over the control of Ray in this Resident Evil-inspired survival horror game and sees him from behind. On his journey into the unknown, Ray finds several different kinds of weapons from a simple stick to a machete and even a very helpful bug spray to fend off the many enemies. But these aren't limited to just nasty bugs but also include giant gorillas or strange lizard-women and the occasional boss fight against 10-foot-tall praying mantises and other similar screen-filling monstrosities. Each monster has different weaknesses and also drops purple fragments when killed. If the player collects enough of these, a special box will appear in the level which holds different useful items (usually weapons).