The Tide is a voxel based 3D first person tower defense game, inspired by Creeper World. Players collect and process resources to build towers and power distribution networks to fight off creatures known as the Tide. The game features a 25 mission campaign, randomly generated skirmishes, and a map editor.
A quick tutorial on how to play the game, hopefully takes away some of the mystery. Also avalible on Youtube, and on the main site under Guides.