By building the hangar, your Evil Genius has achieved true power. This room provides the perfect weapons platform to build evil superweapons used for your most terrible of evil deeds, such as the construction and launching of your all-powerful Doomsday Device.
The hangar is a room like no other, as it has only two purposes throughout the entire game. After you have built the rocket caverns, you are able to build a catwalk above it, which is the hangar room. One of its uses is to place a rocket test fire button on for Objective 9. Its other use is to have a shortcut across the base so your minions don’t have to go all the way around.