Reach For the Stars Retrospective
By Patrick S. Baker
The designation “4X” (standing for “eXplore, eXpand, eXploit and eXterminate”) originated in the Computer Gaming World 1993 preview of Master of Orion by Alan Emrich. In a play-on-words, Emrich rated the game as “XXXX”, referencing the XXX rating for pornography. Over time the phrase mutated into 4X and has been adopted and adapted into a game genre description.
A strategy game must have the following gameplay tenets to be a 4X game.
Explore: the player dispatches reconnaissance units to discover surrounding areas.
Expand: the player lays claim to newly reconnoitered areas by colonizing them, or by otherwise extending their influence into the newly discovered territory.
Exploit: the player collects and utilizes various resources in areas they control, and also upgrades the usage and collection methods of those resources.
Exterminate: the player attacks and conquers, or eliminates, their opponents.


By Troy Hill