Kill all approaching enemies and preserve your empire for an invasion! Upgrade your weapons, traps and spells as often and as strategically as possible!
Use the mouse to aim; press the left mouse button or the space bar to shoot or to carry out an action.
Weapons: 1, 2, 3, 4, 5, 6;
Traps: Q, W, E, R, T, Y;
Spells: A, S, D, F, G, H.