LEGO Rock Raiders ( Game ) LEGO Rock Raiders is a video game based on the Rock Raiders theme . There are two games with the name , on two different systems . Windows ( PC ) . The PC game is a real - time strategy similar to " Dune II " , and was the first video game for the Rock Raiders theme . The game opens with optional training missions and one " real " mission unlocked . The Chief explains the briefing of each mission . Most missions require the player to collect a certain amount of Energy Crystal s . The required number of Energy Crystals during missions starts low , but gradually gets higher in later missions as a result of increased workload . Some missions require the player to locate fellow Rock Raiders that have been trapped in landslides , or to find certain pieces of equipment and bring them back to base . One of the game ' s features is the Priority Menu . With this menu , players can set what order Rock Raiders carry out their tasks . For example , players can set whether Rock Raiders should collect Energy Crystals or LEGO Ore first . At the end of each mission , Chief evaluates the player ' s work , examining various aspects of the mission . With all these taken into consideration , Chief gives a mission rating percentage . There are twenty - five missions in total , with each of them taking place in either a rocky , volcanic or icy cavern environment . It is not necessary to complete every mission with 100 % , or even complete all the missions , to complete the campaign . The website www . rockraidersunited . org is a fan site of the LEGO Rock Raiders PC game . Members of the site post modifications of game levels on the forum and create new Objects for use in the game . Sony PlayStation . Unlike the PC game , the PlayStation game is an action and strategy game , in which the player controls a main character , i . e . Jet , Axle , Docs , Bandit or Sparks , instead of commanding a squad . Also , unlike the PC release , which is centered around constructing a base and mining , the PlayStation release centers around exploring the mission environment . Most missions require the player to collect a certain amount of Energy Crystals , while some missions require the player to rescue Rock Raiders that have been trapped by landslides or other dangers . Some missions combine both of these objectives . There are eighteen campaign missions , and six multiplayer missions in the NTSC version . The PAL version includes eighteen " different " one - player and two - player missions , and three one - player bonus missions that are accessible after the campaign is completely finished with every mission completed to a Gold Medal standard ( see below ) . Rather than a percentage , at the end of each mission players receive either a Bronze Medal ( minimum required objectives complete ) , a Silver Medal ( most objectives complete ) , or a Gold Medal ( all objectives complete ) . The criteria for these awards vary between the NTSC and PAL versions . The player also has to remember the password ( by keeping it as a record ) to load the game ' s progress instead of just saving a game save file for it onto the computer ' s hard drive ( or a PS1 memory card in this case ) and loading it to continue the game .