Shoot-em-up
A fixed shooter or shoot-em-up game is a game where the player has limited control of their character and the focus is almost entirely on annihilation of their enemies. There are several major sub-genres.
Stationary shooter
A stationary shooter has players only able to control their two-dimensional position on the screen and sometimes the direction they are facing. Stationary shooters have various degrees of movement freedom, sometimes only allowing control on a one dimensional line.
Scrolling shooter
Often similar to stationary shooters, the scrolling shooter has the players auto-moving throughout a level at a mostly fixed speed. These can either be vertically, horizontally or forward based. At nearly all times direction is fixed with limited flexibility in the case of forward based.
