Abilities

Use the brief list below to determine abilities that do not change in puprose.

STR <-> Str
DEX <-> Dex
STA <-> Con

To determine which score to use in each game for various checks and bonuses, certain checks are determined differently between the two games. These are discussed in detail below.

INT <- Wis/Int
INT/LDR -> Wis
LDR <- Wis/Cha
LOG/INT -> Int

Interpretting the Rolls

Even though it uses 3d6 to roll abilities, the d20 system uses 22 point ability stats for the common range. That's 20 points between least (3) to greatest score (22). This is easily converted.

First, Star Frontiers uses 5 point increments on stat bonuses and the like, so it's easy to convert and use the 1 point increments of the d20 system, because 1 point from d20 equals 5 points from Star Frontiers.

When rolling, in Star Frontiers, you are looking for the lowest roll for a success, whereas, in d20, you are looking for the highest roll. Thus when you want a 20 or less to hit in Star Frontiers, you want a 17 or better in d20.

Roll the ability for your character or compare your existing character's abilities to the following table to convert it to the target system:

Roll Conversion Table
d100	Penalty	d100	Bonus
01-05	-9	51-55	+1
06-10	-8	56-60	+2
11-15	-7	61-65	+3
16-20	-6	66-70	+4
21-25	-5	71-75	+5
26-30	-4	76-80	+6
31-35	-3	81-85	+7
36-40	-2	86-90	+8
41-45	-1	91-95	+9
46-50	0	96-00	+10

Translating Star Frontiers' 8 abilities to d20's 6 abilities and back again isn't too hard, but things can be lost in translation, so be sure to always keep your original character around.

STR is equal to Str
STA is equal to Con
DEX is equal to Dex
RS is equal to Reflex (only when translating from d20 to Star Frontiers)
INT is eqaual to Wis
LOG is equal to Int
PER + LDR/2 is equal to Cha

Saving Throws

In the D20™ game system, Will, Reflex, and Fortitude scores are referenced to determine what are called "saving throws". In Star Frontiers™ these scores are determined with ability checks as follows:

Will Checks. When a character's will is challenged, you may use either the LOG or LDR score depending on how they are being challenged. If their thinking, sensabilities or beliefs are being challenged, LOG is the base score. If challenges to their leadership or self-determination arise, then LDR is used. If challenges to one's leadership or mental capabilities endure, then take the highest score of either LOG or LDR to determine their mental endurence or sanity.

Reflex Checks. A character who needs to react quickly, or their reflexive abilities are challenged, a check is made against the character's RS score.

Fortitude Checks. Resistence to disease, gas attacks, poison and other challenges to a character's immune system and endurence are determined with checks against the character's STA score.