Combining David Hargrave's Arduin (specifically, the proposed or developing ruleset of Bloody Arduin) with the streamlined, sci-fi O.G.R.E.S. rules engine of Jason Vey's 13 Parsecs

 Combining the "gonzo," genre-bending, and famously lethal fantasy of David Hargrave's Arduin (specifically, the proposed or developing ruleset of Bloody Arduin) with the streamlined, sci-fi O.G.R.E.S. rules engine of Jason Vey's 13 Parsecs creates a game of chaotic, multi-dimensional, high-risk, "kitchen-sink" science-fantasy.

Since 13 Parsecs is already designed to be highly customizable and runs on the modular O.G.R.E.S. system, and Bloody Arduin is an attempt to create a cohesive, modern (but still brutal) Arduin ruleset, the combination should focus on integrating the flavor and lethality of Arduin into the framework of 13 Parsecs.

Here is a proposed framework for the Bloody Parsecs (or Arduin's Solar Frontier) RPG:

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 Bloody Parsecs: Arduin's Solar Frontier

1. Core Rules: Powered by O.G.R.E.S. (13 Parsecs)

You would use the core mechanics of 13 Parsecs, which is a Class-and-Level system with three main checks:

• Class Abilities/Skills: Roll a percentage (d100) and try to roll under your percentage chance.

• Attribute Checks (Including Combat & Saves): Roll a d20, add your attribute bonus/mods, and try to roll 20 or better.

• The Rule of 2 (GM Tool): For quick, non-critical checks, roll a die (like a d6) and a 1 or 2 is a success.

The Key Arduin Injection (Lethality):

The most iconic element of Arduin is its lethality. This is best integrated by modifying the d20 combat and saves:

• Critical Hits/Fumbles: Use the infamous, highly detailed, and often deadly Arduin Critical Hit and Fumble tables from Bloody Arduin (or a streamlined version thereof). A Natural 20 on an attack roll results in a Critical Hit roll, and a Natural 1 is a Fumble roll. This introduces the chaotic, visceral violence Hargrave was known for.

• Wounds and Damage: Retain 13 Parsecs' vitality (HP) system, but make saves more difficult and failure more punishing (e.g., using a modified Constitution Save from Arduin to resist poisons, radiation, or being instantly killed by a massive Critical Hit).

2. Character Creation: The Gonzo Multiverse

Combine the options, with an Arduin bent:

Component	Bloody Parsecs Integration	Source Priority
Attributes	Use the standard 6 (Str, Dex, Con, Int, Wis, Cha) and add Arduin's 7th attribute: Ego (for psychic/willpower saves).	Arduin/D&D style
Races/Species	Blend them! Include the 13 Parsecs species (Androids, Felis, Saurians, etc.) alongside classic Arduin races (Deodanth, Great Grey Beasts, Lizard Men, etc.). Assumption: Any species can take any class (a core 13 Parsecs philosophy).	Mixed
Classes/Archetypes	Blend the lists. 13 Parsecs archetypes (Augmented, Blaster, Psychic, Slicer) become the core framework. Integrate Arduin classes (Star-Powered Mage, Tekno, Martial Artist, Assassin, Runelord) as specialized subclasses or "Advanced Training" options.	Mixed
Skills & Training	Use the 13 Parsecs Skill System (percentile rolls), allowing players to train Skills from both a fantasy-magic base and a sci-fi/tech base.	13 Parsecs

3. Magic, Psionics, & Technology: The Kitchen Sink

This is where the Arduin flavor truly shines in a sci-fi setting.

• Magic and Psionics: Use the 13 Parsecs rules for Psionics and Mystical Powers. The spell lists, however, should be the famously voluminous, chaotic, and often strange spells from the Arduin Grimoires. A Star-Powered Mage might cast a spell called "Greg Stafford's Dismay" right after a Psychic attempts to hack a starship computer.

• Gear: Blend the tech lists. The players will have access to both laser blasters, energy shields, and advanced cybernetics from 13 Parsecs, as well as the unique, often cursed or insanely powerful magical/technological artifacts of Arduin (like the "Tekno" gear or unique Arduin armors).

4. Setting & Campaign Tone

The setting becomes a "Gonzo Science-Fantasy Multiverse."

• The World: Arduin itself is just one highly-magical, dimensionally-unstable planet within the Solar Frontier (the setting of 13 Parsecs). Characters move between high-tech space stations and deep-fantasy dungeons, often within the same session.

• Tonal Goal: Gritty Sci-Fi Fantasy. The system is rules-light and fast-playing like O.G.R.E.S., but the high chance of a devastating Critical Hit or a disastrous Fumble maintains the unpredictable, high-stakes chaos and danger that defines the Bloody Arduin experience. Death is always a roll away.