[4] In the game, players act as the commander of the Iron Marines, a military group tasked with saving a space colony from extraterrestrial invaders.

[1] In the game, players act as the commander of the Iron Marines, a military group tasked with saving a space colony from extraterrestrial invaders.

[2][5] To fight off the invaders, the player is given control of a powerful hero unit that features its own distinct abilities in combat and can be leveled up.

[2] Levels involve a number of objectives, such as defending military bases from attack, and searching for and destroying enemy armies.

The reviewer said that Iron Marines did not have the complexity of other games in the genre, but kept the basic concept and managed to include several distinct twists.