To begin any research, you need a room, which in the future will be called a laboratory. If the research is classified, then the laboratory will be located in a special place, access to which will be limited. In the game Mercury Research Lab you will find yourself in a secret laboratory that studies mercury. This is a little strange and it is not clear why the laboratory was classified. You want to find out and secretly entered the premises. However, getting out was not so easy. Find the door key - this is the only exit to Mercury Research Lab.
