Iron grid

Iron Grid is set during an alien invasion of Earth, and the player’s objective is to liberate the planet from the invaders. The game is built around resource management, with the player deciding how to spend what they have on defensive and infrastructural structures.

The two building types described are towers and power stations. Alongside these, the player constructs the Iron Grid itself, which is put together piece by piece rather than placed as a single structure. Progress therefore depends on balancing the resources needed for defence, power and the gradual completion of the grid.