Isotope 244 has released Machines at War 3 for Mac OS X and Windows. It’s an US$19.99 sequel to Land Air Sea Warfare.

Here’s how the game is described: “Machines at War 3 is the rare indie game that offers a full single-player campaign to compliment its multiplayer and random map modes.  It reminds many gamers of Red Alert and Total Annihilation.

“Using retro strategy and heart-pounding action, Machines at War 3 lets you battle and outsmart enemy forces as a military commander. You’re joined by a fiery officer named Samantha Vice, who helps you maneuver through 21 intriguing campaign missions. Your objective: Uncover why your country’s secret research team — the Omicron Initiative — has disappeared.

A demo is available for download. Learn more at .