Rollespils WIKI

All spells incurs Spell Failure from armor unless the class has a feature that says otherwise.

Keywords: Indirect: Cover is not traced from you but from a point mentioned in the spell text. Stackable: Allows multiple instances to affect the same target simultaneously. Curse: Effect may persist after initial spell runs out.

The range of a spell is usually given as Close, Medium or Long.
Close range is up to 30 feet away from the caster. If using a battlemap this is equal to 6 squares.
Medium range is up to 100 feet away from the caster. On a battlemap this is equal to 20 squares.
Long range is up to 400 feet away from the caster. You probably shouldn't try to count 80 squares on a battlemap.

Range is determined by selecting a square, this square is the “origin square” and range is counted from all edges of this square.
A fireball deals damage to every creature within 15' of the origin square. Someone casting a fireball would have to select an origin square within Long range (400 feet).
Every creature within 3 squares of the origin square would then be affected by the spell (remember every other diagonal square counts as 2). And would have to roll a save as normal.
This gives the fireball a total diameter of 7 squares at it's widest part, 1 for origin square and 3 in every direction.