This is a list of Game consoles by the era they occurred in. Eras are named based on the dominant console type of the era, though not all consoles of those eras are of the same type. Some eras are referred to based on how many bits a major console could process. Also included in this list are handheld game systems, which are usually of lower computational power than the set-top consoles of the same era. Consoles marketed and sold as general-purpose computers or that can play only a set of built-in games are not included.