From SCP: Secret Laboratory Public Beta Official Wiki
SCPs are anomalies that have been captured by the Foundation. SCPs are stored within numerous Sites owned by the Foundation across the world, these sites include places like Site-48, Site-17 and Site-02, with the last one being the place where SCP SL takes place at. While some anomalies are harmful or hostile, others can be very beneficial if used correctly. The following SCPs are found ingame.