Originally an Android release, Forest Defense has been ported to iOS and has been holding its fort in the App Store. Forest Defense, as its name implies, is a tower defense game. But as Oriented Games, its developer, is quick to point out, it’s not your average tower defense game. In addition to the strategic defense gameplay, Forest Defense also incorporates real-time combat action. That means there’s not much waiting to do before something exciting happens, which is characteristic of many tower defense games.

Forest Defense is the story of, obviously, a forest under siege. It is your job as the leader known as The Devout to cast spells and summon mystical creatures to help you defend the forest against mechanical invaders called The Automata. In service of the forest spirit Hamadryad, you must strategically build an army to wage war on the enemies in each of the 50 increasingly difficult levels. Watch a preview of the game below.

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The game is free to download, but, as expected from a free tower defense and combat action game, it is stocked with in-app purchases. These in-app purchases consist of packs of Sun Power, which serves as the in-game currency. Sun Power is used to upgrade your spells, allies, weapons and even The Devout himself. Purchasing Sun Power is not totally required, though, as it can also be earned while playing.

Forest Defense is designed for both iPhone and iPad and, as mentioned, is available in the App Store for free. I think it’s worth a try if only for its use of decorative tribal art.