Atomic Age: Modern is one of the Epoch in Empire Earth. The timeline of it is typically dated to the aftermath of World War II or after the bombing Japan in World War II, but the timeline which can be located on the front cover has the Atomic Ages all from 1900's to 2000's, which means the Modern epoch of this game ends in the 2030. It features little amounts of Barracks units (unless you have unlocked them from the tech tree via the scenario editor) which include Marines, Medics, Heavy Mortar (final upgrade) and the Flame Thrower and Machine Gunner.

When this stage is reached within a game, it usually signals the beginning of the loss of resources from any localised area to which the players tackle the problem by migrating to the other islands to keep up the distribution of resources which are vital for any state.