Halo: Combat Evolved is the first game in the Halo series, in the first-person shooting genre released by Microsoft in 2001. The game focuses primarily on controlling the main character shooting to destroy the enemy. At the beginning of the stage, you will have a health bar and an energy shield. The heavily attacked shield will grab, but it will recover after a while without taking damage. In addition to guns, players also own many other tools to fight, such as boxes to help invisible characters, increase the ability of the shield, for example. In each match, players can only carry up to 2 weapons and up to 8 grenades. In the game screen, the use of a weapon is inevitable, but you must also pay special attention to the temperature of the gun. If used continuously for a long time, the gun will heat up very quickly and can not release bullets anymore. In addition, each gun has its own advantages and disadvantages, so it is necessary to consider between weapons before going to the screen carefully. Halo: Combat Evolved possesses up to 10 different weapons for players to explore freely.