Machines at War 3 is a real-time strategy video game developed by Isotope 244 and published in September 2012 for Windows and on November 10 for Mac OS X.

The gameplay is inspired by the seminal real-time strategy game Total Annihilation.

Players build ground, air and sea factories producing military units across three technology tiers and experimental massive units, as well as varied static defenses and walls to protect their base.

Resources include ore, that is obtained at regular intervals from the headquarters as well as mines which must be placed on rare deposits found on the map.

Where its direct predecessor Land Sea Warfare added naval units, Machines at War 3 adds infantry units, campaign missions and the long anticipated online multiplayer mode to the Machines at War series.