Description: Underground invasion is an action defense game where you can play defending War coder City sewers to prevent the invasion of strange creatures.. Underground Invasion is a Shooting Games.
Instructions: Mouse to Aim.
Left Mouse Button to Fire.
Reload: r key.
Edit mode: A key ( select weapons, upgrades and repair during combat ).
Pause: P key.
Numbers 1 through 5 to choose a weapon, ( once purchased ). .