Optional Rules

This page details rules or systems that are not covered or simply ignored in the base system but some groups may wish to utilize to assist in a campaign focus or simply enjoyment of the topic or task it covers.

Conversion From 3.5/PF system
While niche has some basic concepts similar to these systems, it has done what it can to rebuild from the ground up, and as such conversions between these systems may not be 1:1. Here is some basic rules to help convert any content you wish to use.

Converting Monsters
As a general rule of thumb the following can be applied to monsters:


 * Subtract 10 from the creature's AC, CMD, and save DCs and replace them with d20 rolls.
 * Add half the creature's BAB as their BDB (if you feel their AC is too high with this, simply skip this step)
 * Remove dexterity from the creature's CMD bonus.
 * Reduce any size bonuses/penalties for CMD/CMB to match the niche progression (1/2/3/4 rather than 1/2/4/8)
 * Add the concentration skill to the creature (add ranks as necessary if the creature would need to utilize it)
 * In the case of 3.5 this remains the same.
 * Subtract 1 from any skills that would be class skills for them, and add 2 for any skills the creature has ranks in.
 * In the case of 3.5 class skills weren't existent, but creatures gained more skill points at first level, as such instead subtract 2 skill ranks from the skill and add +2 to a skill with a rank in it.
 * Increase the size of the hit dice used by 1 step (if already d12 simply add 1 more HP each level then).
 * Optional: If you wish to adjust things to be more in-line with Niche d20 you can modify their feats to work closer to their Niche Variants, but we recognize this can be time-consuming.

Converting Magic Items
Most magic items are not suitable for Niche d20 thus we will detail what items are acceptable and what items would need adjusted.


 * Items that provide passive stat increases such as bonuses to ability scores, AC, saving throws, or CMD are generally not needed as many of these stats are included into the progression of a character, and as such would wildly inflate the stats of a niche character.
 * Items with save DCs should generally have their DC subtracted by 10 and use the remaining value as their save attack roll bonus.
 * Most item costs should at least be reduced to 1/3 cost to match closer to the wealth progression of Niche.

Converting Mundane Items
Most mundane items are suitable for niche, but its recommended that when trying to convert weapons/armor to simply utilize the weapon/armor creation rules instead for a cleaner representation of that weapon.

Incremental Leveling
This set of rules is for campaigns that don’t level up frequently, or for groups that find the sudden (and sometimes large) power boost unrealistic compared to a character working their way up to their newfound power. When using these rules at every quarter of a level a character receives (25%, 50%, 75%, 100%) they may chose to gain one of the following bonuses from their next level early:


 * BAB, BDB, MPB, SPB, and BCB
 * Hit Dice, Ability Score Increases, and Saves
 * Class Features
 * Spells, Talents, Feats, and Class pools (Spell Points, Stamina, and Ki for example)

This does not guarantee gains for each level as a ½ BAB character for example may not see their BAB go up next level, this simply lets them count their level as one higher when calculating that portion of their character.

It is important to track these values carefully as while some parts would increase, other parts will not; such as BAB, and MPB increasing but Stamina increasing as a separate bonus.

At 100% of the XP required you gain the last item on the list that has yet to be selected, as well as finalize any other bonuses your character may gain from a level up, as your character has now officially reached their next level.