THE CUBE, SAVE US Demo places its post-apocalyptic premise decades after a mysterious cube’s arrival was mistaken for an escalation, bringing nuclear war. When survivors finally emerge, the still-hovering structure swallows them. It is both peril and possible source of survival: some who return have what they need to keep going, while most do not. This sets the stage for expeditions into an unexplained threat, without establishing that the demo includes every feature described for the game.
The cube consists of 27 fragments, and passing through its gates changes the surroundings and mutants. The described settings include a downtown area, a pyramid and an amusement park; players must seek weapons and escape routes as conditions shift. Inside, hostile mutants and other raiders make survival a matter of close combat and careful use of skills and supplies. New Cinderfall, a settlement founded by raiders, offers a contrasting place to interact with people and learn more about surviving in this world.
The listing categorizes the game for multiplayer, PvP, online PvP, co-op and online co-op. The source does not detail how those categories work in the demo, so the documented premise and mechanics describe the game’s design rather than asserting a particular demo scope.