In a distant future, humanity is attacked by monsters known only as Vek. The last hope are giant Mechs who can fight of the invading force. The player control these Mechs in a turn based fashion. The monsters first move, and then announce where they are going to attack. The player may then remove the threat by killing the Veks, moving them out of the way, pushing them into the water, and so on.
The game features permanent death and no save options (except when quitting). After completing certain task a set of different Mechs may be unlocked. Each mech have very different weapons and thus strategies. Some just push monsters away, some make them turn away, some do direct damage. A clever move would be to make Vek do damage to each other.
Battles have a few objectives which grants currencies or bonuses if fulfilled. This may be used to upgrade the Mechs as well as acquiring new weapons. The player may choose between a few available battles each time.