When compared to most real time strategy games, Harvest is light on the strategy and depth of unit abilities but heavy on arcade-style action and swarms of enemies. Set in the distant future, you play the role of a new worker on the planet Hephaestus who must build a defense network against invading aliens. You won't fight just one or two at a time, however. Expect each wave to number in the hundreds, all of which must be dispatched before you can take a breather. Saying this game is intense doesn't do it justice. To build units in Harvest you must first mine the hills for minerals. With enough cash in hand, place buildings with a simple click of the mouse. Then, supply units with energy by distributing tiny way point nodes throughout the battlefield. The massive network of energy being exchanged will form a glowing web that's quite impressive to look at, especially when you get an idea what a strong feed is compared to a weak one. The more energy a building gets, the faster it's erected, the faster it reloads, and the faster it repairs itself when damaged. In general, your first task should be to establish several harvesters to bring in minerals, then place a few energy waypoints before plopping laser towers or missile bases on the ground. There are only six building types, each with a few upgrade or optional modes of operation, but it's quantity that counts in this game, so build lots of them.
Mac OS X