"Shoot-em-up" is a common slang term used to describe video games that involve a substantial amount of shooting. However, there are other synonyms that can be used to describe these types of games. Some of these synonyms include "action-packed," "gunfight," "shooter," "blaster," "combat," and "firefight." These words convey the same idea of a game centered around shooting and combat. Along with video games, these terms can also be used to describe movies or television shows that have similar themes. No matter what the medium may be, these synonyms represent the excitement and intensity that comes from a good shoot-em-up experience.