If you've stepped out your front door at all in the past few weeks, you'll have noticed groups of people walking around in strange patterns while staring at their phone screens. The Pokémon Go trend is sweeping the world.

But actually there are tons of other gaming apps if you're looking to diversify. Ingress is another game that uses augmented reality.

Walk out your front door and see the battlefield around you. Strategize and form alliances to further your cause. The world is the playing field in the fight for humanity against a mysterious energy.

Available to play on Android and iOS, Ingress is FREE with in app purchases.