In most "Metroid" games, the player explores far away planets or space stations. The player, as Samus, starts the game with very few powers, and not many places to go. The player must explore to find items and powers that let him or her get to new areas. In the first "Metroid"; Samus had to defeat Ridley; a giant monster named Kraid; and then destroy the Space Pirate's computer, Mother Brain. In all "Metroid" games, there are different goals to achieve, but nearly all of them involve looking for items and exploring.