General

Random Numbers

Random numbers are defined by a mean, a standard deviation, and a maximum number of deviations. For example, the standard roll for skills and saves is denoted by:

[50±15 (3σ)]

Which indicates that the random number will have a mean of 50, a standard deviation of 15, and no value produced will be more than 3 standard deviations (45) away from the mean. This is equivalent to a normal distribution from 5 to 95.

Combat

Combat in Legends of Omterra is turn-based.

Basic Attacks

One action that a character can perform during his or her turn is to perform a basic attack against a target adjecent to him or her, excluding diagonals. The damage dealt is equal to:

((100 + Attack Bonus) / (100 + Armor Class)) * Weapon Damage

Saves

The effects of some spells, traps, etc. allow for a save (either Fortitude, Reflex, or Will). A character succeeds if:

[50±15 (3σ)] > Difficulty Class - Save Bonus

Spells

Many characters can cast spells by paying Mana or Aether, and these spells each follow their own mechanics. However, Spell Resistance can reduce the damage. The damage dealt by a spell is:

BASE DAMAGE / (1 + (Spell Resistance / 100))

Out of Combat

Out of combat, the game proceeds in real time, although it can be paused if playing single player.

Skills

When a skill is used, it to must check against a Difficulty Class. The skill attempt succeeds if:

[50±15 (3σ)] > Difficulty Class - Skill Bonus