Halo is a science fiction video game franchise blessed with tremendous success. The series focuses on an interstellar war between humanity and a theocratic alliance of aliens known as the Covenant, and later, more threats like the Floods and Prometheos will be found. The Covenant is led by its religious leaders, the prophets, and 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 Chief Master John-117, a biologically enhanced human super soldier, and his artificial intelligence companion Cortana. Set the foundations, what Halo games offer is a lot of action, lived intensely and in a totally realistic way. Ride inhospitable planets and shoot at little or no friendly extraterrestrial creatures using your powers to fight the enemy in all its forms. Science fiction of category 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.