A Path to Steam
±5 points per ±1 yard/second
Your Basic Move is your ground speed in yards per second. This is how fast you can run – or roll, slither, etc. – without encumbrance (although you can go a little faster if you “sprint” in a straight line; see p. 354).
Basic Move starts out equal to Basic Speed, less any fractions; e.g., Basic Speed 5.75 gives Basic Move 5. An average person has Basic Move 5; therefore, he can run about 5 yards per second if unencumbered.
You can increase Basic Move for 5 points per yard/second or reduce it for -5 points per yard/second. For normal humans, training or a sleek build can justify up to 3 yards/second of increased Basic Move, while disability or poor fitness can explain up to 3 yards/second of reduced Basic Move. Nonhumans and supers are not subject to these limits. Races and supers who can move very fast should see Enhanced Move (p. 52).
Your Move score in combat is your Basic Move modified for your encumbrance level; see Encumbrance and Move (below).
Encumbrance and Move
“Encumbrance” is a measure of the total weight you are carrying, relative to your ST. The effects of encumbrance are divided into five “encumbrance levels.” All but the lowest level will reduce your actual Move to a fraction of your Basic Move and give a
penalty to Dodge, as follows:
No Encumbrance (0): Weight up to Basic Lift. Move = Basic Move. Full Dodge.
Light Encumbrance (1): Weight up to 2xBL. Move = Basic Move x 0.8. Dodge -1.
Medium Encumbrance (2): Weight up to 3xBL. Move = Basic Move x 0.6. Dodge -2.
Heavy Encumbrance (3): Weight up to 6xBL. Move = Basic Move x 0.4. Dodge -3.
Extra-Heavy Encumbrance (4): Weight up to 10xBL. Move = Basic Move x 0.2. Dodge -4.
Drop all fractions. Encumbrance can never reduce Move or Dodge below 1.
Note that these levels are numbered from 0 to 4. When a rule tells you to add or subtract your encumbrance level from a die roll, this is the number to use. For instance, encumbrance gives a penalty to Climbing, Stealth, and Swimming skills.
Gravity is measured in “Gs.” Earth’s gravity is 1G. Note the gravity of your home world if it differs from 1G; e.g., “1.2G” for a world with 1.2 times Earth’s gravity. All weights are multiplied by local gravity, so to function like someone with a given BL on
Earth, multiply the desired BL by your home gravity and buy the ST corresponding to the adjusted BL. For instance, to operate in 1.2G as if you were a ST 10 person in 1G, start with BL for ST 10, which is 20 lbs., and multiply by 1.2 for gravity to get a BL of 24 lbs. This BL corresponds to ST 11, so you’d need ST 11 in 1.2G to function as well as a ST 10 person in 1G.
Move in Other Environments
Water Move is normally Basic Move/5, rounded down. You can increase water Move directly for 5 points per yard/second, or reduce it for -5 points per yard/second. Members of land-dwelling races must have Swimming skill (p. 224) to increase water Move, and cannot buy more than +2 yards/second. If you’re Amphibious (p. 40), both water and ground Move equal Basic Move, and changes to Basic Move adjust both scores. If you’re Aquatic (p. 145), water move equals Basic Move and ground Move is 0.
Air Move is 0 without special advantages. If you have Flight (p. 56), air Move equals Basic Speed x 2 (not Basic Move x 2). You can increase air Move directly for 2 points per yard/second, or reduce it for -2 points per yard/second. If you have Walk on Air (p. 97), your air Move equals your ground Move, because the air is like solid ground beneath your feet.