GURPS Basic Set Campaigns

P. 430.: Change the text, which begins:
Dense (1.21-1.5 atm.): The air is breathable, with some discomfort: -1 to all HT rolls, unless you have a pressure suit or "reducing respirator" that lowers air pressure.
Very Dense (1.51+ atm.): Requires a reducing respirator to breathe; otherwise you start to suffocate. Usually quite hot from greenhouse effects.
to
Dense (1.21-1.5 atm.): The air is breathable, with some discomfort: -1 to all HT rolls, unless you have a pressure suit. If the air contains more than 50% oxygen, you must wear a "reducing respirator" that lowers oxygen partial pressure, or suffer -2 to DX due to coughing and lung damage.
Very Dense (1.51+ atm.): As "dense," but a reducing respirator is required if the air is more than 10% oxygen. Usually quite hot from greenhouse effects.
P. 436.: Under A: Radiation burns and chronic "somatic" damage, append a sentence to the paragraph: "Gain either condition only on a critical failure."
P. 456.: The Black, Grizzly, Polar, and Cave Bear templates should all list the No Fine Manipulator disadvantage.