Creatures 3 and docked Docking Station worlds contain two airlocks, one in the Bridge and one in Engineering. An airlock can be opened and closed by pressing the button located outside it and activated by pressing the button inside (activating an airlock will also close the door temporarily). The airlocks have a number of uses including the killing of Grendels (or any other creatures), the removal of certain critters and the destruction of agents that are either too big for the recycler or not effectively removed by it.