Fallout 3/S.P.E.C.I.A.L.

S.P.E.C.I.A.L. stands for Strength, Perception, Endurance, Charisma, Intelligence, Agility, and Luck. At the very beginning of the game, you'll formulate your S.P.E.C.I.A.L. statistics. It is important to choose what kinds of character that you want to be from the very beginning, because while you'll be given the ability during the game to put a point here and there to boost yourself, the large majority of S.P.E.C.I.A.L. points are chosen at the beginning of the game.

Strength
Strength is a measure of your row physical power. It affects how much you can carry, and determines the effectiveness of all melee attacks.

Perception
A high Perception grants a bonus to the Explosives, Lockpick and Energy Weapons skills, and determines when red compass markings appear (which indicate threats).

Endurance
Endurance is a measure of your overall physical fitness. A high Endurance gives bonuses to health environmental resistances, and the Big Guns and Unarmed skills.

Charisma
Having a high Charisma will improve people's disposition toward you, and give bonuses to both the Barter and Speech skills.

Intelligence
Intelligence affects the Science, Repair and Medicine skills. The higher you intelligence, the more Skill Points you'll be able to distribute when yo level up.

Agility
Agility affects you Small Guns and Sneak skills, and the number of action Points available for V.A.T.S.

Luck
Raising your Luck will raise all of your skills a little a high Luck will also improve you critical chance with all weapons.