Harvest Massive Encounter

Repel hordes of aliens coming to destroy your mining venture in this extremely unique arcade strategy game. Use clever tactics, cunning defense priorities and daring base designs to achieve all goals and rise in the rankings of the interstellar Medusa corporation. There are five different ways to play as you choose from Normal, Wave, Insane, Rush or Creative Modes. Buy it now or download a free demo below.

Starcraft Battle Chest
(popular real-time strategy game for mac)

Star Craft Battle Chest is probably THE best RTS game for Mac. Ever. It weaves together an engrossing three-act plot. Early on, as a Terran magistrate, you spend a breathtaking 30 minutes defending against a Zerg onslaught. As the story unfolds around you, you'll experience the Zerg's hive mentality and decipher the mysterious Protoss by the game's dramatic conclusion.by Blizzard Related: Machines at War

Tribal Trouble

Tribal Trouble is a realtime strategy game designed to be easy to grasp, yet difficult to master. A bunch of clueless Viking raiders have gotten stranded on a group of tropical islands - much to the dismay and irritation of the local natives. Your mission is to help the tribesmen settle their disputes in this fast paced realtime strategy game. While the game mechanics only take a few minutes to learn, it can still be quite a challenge to beat your opponents: To win, you are going to need some skills in planning strategies and utilizing the varying terrain for successful tactics. by Oddlabs