Halo is a science fiction video game franchise blessed by a huge success. The series focuses on an interstellar war between humanity and a theocratic alliance of aliens known as Covenant, and later, more threats will be found as the Floods and the Prometheans. The Covenant is guided by its religious leaders, the prophets, and they worship an ancient civilization known as the Forerunners, who perished in combat with the Flood parasite. Many of the games focus on the experiences of Master Chief John-117, a biologically enhanced human super soldier, and his partner Artificial Intelligence Cortana. Once the bases are established, what Halo games offer is a lot of action, lived intensely and in a totally realistic way. Travel inhospitable planets and shoot at little or no friendly extraterrestrial creatures using your powers to fight the enemy in all its forms. Category science fiction that also extends to all those games that, without being strictly Halo, keep grateful aesthetic and narrative similarities. Halo games will allow you to travel to unknown worlds and face dangers that will overcome your worst nightmares.