Fast20/Wordsmith

Everything you do starts with a D20 roll.

Each PC/NPC defaults to 0 in anything they attempt to do.

Characters get 25 points to spend on Descriptors.

A Narrow Descriptor costs 1 pt per +1 bonus (or the reverse if its negative)

A Broad Descriptor costs 3 pts per +1 bonus (or the reverse if its negative)

A bonus can be given to an ability/skill, damage roll, any die roll.

PC's have 25 Hit Points modififed by any Descriptor that adds HPs.

Example Character:

Logan Greystar
+x is rank; (x) is cost

Thief +4(12)
Good with a Sword +3(3)
Studied under Le'Fleur +2 DMG(2)
Lightning Reflexes +2(2)
Works in the Sons of the Crow Thieves Guild +2(2)
Smart +2(4)

Dark20

Very specific skill list say from Savage Worlds for the moment or Cinematic Unisystem.

Skills Default to 0.

You can take up to a max of -5 in Skills for Bonus Skill Points.

Attributes either serve a specific function:
Str +DMG
Con +HP
Dex +Init
Int +Skill Points
Wis +taking 10 or 20
Char +Rerolls

OR

They are +5 to any action they effect.

Class is either a Die Bonus (D8 or D10)

OR

There are Talents (which give an extra die you KEEP for a specific skill) or Profession (which gives an extra die you ROLL & keep ONLY the BEST for a group of skills)

Optional

PC's get an Die Explosion on 10's & 20's.

Fate of Exalted

Ok, so Exalted with Fate 3.

I'm ditching Charms. Stunts replace them.

Exalted all get 1 extra Stunt Free.

Solar

Terrestrial--Minions.

Lunar

Sideral

Abyssal

House Rules for a Post-Apocalyptic Earth Ravaged by Dimensional Breaches

I get my main inspiration from the Siege Engine by Troll Lord Games.

Right now I'm still using the Breaches Attributes, but I use the Siege Engine Attribute Mods & Primes. Humans still get 3. Everything else gets 2. I'm conscidering adding another, due to the extra number of Attributes OR switching to Siege's Attributes.

Primes, however give a +5 Bonus.

Basically you still select Skills per Breaches, but your Rank is simply equal to your Level (however any +X% or divided by 5 is applied). Weapon Skills prevent you from having a -4 Non-Proficiency penalty & adds a damage bonus equal to Level/5.
Hand to Hand Training: Basic gives you a BAB of Level/2 (equal to a Mage).
Hand to Hand: Expert gives you a BAB equal to Level x 3/4 (equal to a Cleric).
Hand to Hand Martial arts gives you a BAB equal to Level (equal to Fighter) +1D6 bonus on any Melee damage.
Hand to Hand: Assassin gives you a BAB equal to Level + 1D6 bonus on any Ranged damage.

Any Saving Throws are handled by Attributes.

I use the D20 System Difficulty Class system for Skills checks & Saving Throws.

And the D20 System Armor Class system for Combat checks.