Simple D20

This simple D20 system is designed for roleplaying games that lend more attention to grit, realism and vulnerability to a D20 game.

Core
This system primarily uses the D&D 5th edition.

While the system features a method for creating a character from scratch, but the system allows for using character classes.

Changes
The changes are many but subtle enough not to change the over all experience.

Health
Health never advances unless the constitution of a character raises. Health is determined by the species of the character and their constitution modifier. This means the average character will be stuck with around 12-15 hitpoints.

Armor
Armors do not make it harder to hit a character, they offer a number of armor points (substitute for hit points) equal to their armor rating times ten. The armor also offers damage reduction, equal to it's armor rating.

Example: Character A attacks character B and does 6 damage. Character B has an armor rating of 3. He suffers 3 damage to his armor points and 3 are soaked by the armor itself.

Once an armor has no more armor points, it stops offering damage reduction.

Defense
Defense is 10+dex modifier+shield modifier+deflection modifier+dodge modifier+proficiency

It works like armor class in the original system, except there is no such thing as flat footed defense.

Attacks
Characters do not gain additional attacks as they advance. Instead, a character can attack as many times as they have dex mod. They simply must distribute their proficiency bonus across these attacks, and cannot stretch to more attacks than that each attack must be made with at least +1 from proficiency.

Further more, if a character is using a weapon with, say 12 strength as a requirement, the character can only attack with it once if his strength is 12, twice if his strength is 14 and three times if his strength is 16 - so the character's strength must be two above the requirement for the weapon for another attack to unlock.

Proficiency
Prof-bonus cannot go beyond 6.

Classes and Races
Races and Classes should assume a more "logical" progression.