Space Lancer - a shooter game is a game space in which the player is in a state of battle against opponents, using weapons to destroy them. The game space is represented as a 2D graphic, i.e. moving left-right and up-down, and is usually a screen on a smartphone or tablet.
The shooter genre includes sub-genres such as fighting games (in which fighters fight each other), shoot 'em up (vertical and horizontal games with constant movement of enemies), and so on. In mobile 2D shooters, the player must shoot at enemies that can move and attack him, and use various abilities to complete levels and bosses.