Similar to the gameplay of Space Invaders, Space Feverstars alien invaders who are attackingEarth. The player must shoot them out of the sky before they land while avoiding each projectile shot by them. The alien craft are arranged in rows and they slowly move left and right across the screen. When the row reaches the edge, the ships drop down a row and move in the opposite direction. Unlike Space Invaders with its single mode for 1- or 2-player games, Space Fever has three different game modes:
Game-A: There are two horizontally-arranged blocks of aliens that move in opposite directions to, and bounce off each other.
Game-B: The aliens move as one "block", but they initially only appear as a single row, with fresh rows gradually being added above the first as it moves down the screen; as it is essentially a single, never-ending level, the shelter blocks are not replenished with each new wave as per games A and C.
Game-C: Functionally identical toSpace Invaders, where the aliens move as a single block in the same direction.
As players shoot more enemies, the speed of them will increase, as will the number of their projectiles. Players have four shelter blocks above them that absorb the enemy shots until they are worn through, and being hit by an enemy shot will cost players a life. Players have three lives and once they lose all of them, the game is over. Sometimes a UFO will fly along the top of the screen and can be hit for a random amount of Bonus points.
Legacy
A special version of Space Fever called was released the same year and features aliens that are double the width of the standard variety, which can either be destroyed completely or split into two smaller aliens depending on where they are shot. This version is in color, and the shelter blocks are visually distinct from the monochrome version. A sequel to Space Fever, titled is a minigame in the Game Boy Camera cartridge. The game also acts as a menu for selecting the other built-in minigames. It deviates from the Space Invaders formula, featuring instead smaller waves of individual aliens and bosses based on faces of Nintendo staff as well as the "game face" photo taken by the player.
