At the beginning of the adventure, a power problem in the lab sets all of the creatures being studied loose. Your mission is very simple: survive the nightmare.
To survive, you'll have to run through the complex's hallways and rooms, looking for anything that might help you. A gas mask, batteries for your flashlight, and keys to open certain doors will be crucial to your survival.
In addition to all of the supernatural creatures you will come across in the SCP lab's hallways, you'll have to be careful of the soldiers, since they don't want you to escape.
SCP - Containment Breach is an interesting adventure game of supernatural terror with great scene randomization. The story is always the same, but the hallways in the complex will change every time you play.