Each of them has a weakness and it's up to the player to exploit them. One special monster involves the Slimy Slug in which it saps your base of energy should it manage to sneak into your base. Other enemies often involve Rock Monsters, Ice Monsters, and Lava Monsters which attempt to destroy your base.

For example, some missions involve acquiring a set number of energy crystals before lava engulfs your entire base. The enemies of the game are not opposing factions, but rather the environment. Most of these objectives normally involve finding lost rock raiders or collecting a set number of energy crystals. Like most RTS games, you are given a set of objectives to complete. Their only chance to make it home is to collect enough energy crystals to power the ship so they are able to fly back home. With the ship running on emergency power, they find a nearby planet that is rich in energy crystals. When they come to, they realize that the ship is in an alternate galaxy far away from their own. The ship becomes badly damaged and to make matters worse, they are sucked into a wormhole, taking the crew off course.

The rock raiders crew are about to embark on a journey home to earth when their ship, the LMS Explorer, flies into an asteroid field.

Why wont my lego rock raiders game play