Action

While the individual objective of an action game varies drastically from game to game, it generally involves advancing through stages referred to as "levels"; along the way, eliminating hordes of enemies with minor puzzle solving involved. Many times the games include a "Boss" or "Bosses", often precluded by "Sub-Bosses" (more commonly known as Mini-Bosses). A mini-boss is usually the climax of a series of levels or each individual level, with a "Boss" being either at the end of the game or they can be tiered with many mini-bosses, a few bosses that are harder in difficulty and then finally leading up to an "End-game Boss" which would be the objective of the game.Bosses are typically defeated by your "pattern recognition" skills and physical reaction speed. In most older action games and even many modern ones, the bosses were programmed with a simple pattern of attacks or moves that would make them very difficult to defeat. Though usually after a few minutes or hours of trying anyone can defeat them as you simply learn the pattern from trial and error. These simple patterns would often include combo moves that require your character to jump, dodge or block an attack, then strike at certain points to deal damage to the boss, perhaps even waiting out or timing the patterns to get your attacks in.Many sub-genres such as platform games and action-adventure games add gymnastic-style puzzles, such as timing jumps to and from moving platforms (hence the name Platform games). Platform games, whether 3D or 2D are usually similar in concept to the original Mario Bros. series of games originally in the arcade then on the Nintendo video game console. Some action games feature 3rd-person-shooter-game-play elements, enabling the player to pick up and upgrade various weapons, each sporting its own special abilities.Another common sub-genre is the Shoot 'em up; which usually involves the player controlling a character or vehicle brandishing many weapons and shooting literally almost everything moving on the screen. The Shoot 'em up genre is well known for its side and vertical scrolling shooter games.