Octas/SRD

Octas is a Table Top Role-Playing game system based on the use of two 8-sided dice, numbered 0-7. It ostensibly uses the octal (base-8) numeric system, although this is largely hidden from players behind some simple conversion maths.

Below are the System Reference Documents (SRDs) needed to play the main variants of Octas (be aware that there are also specialised genre-variants that necessarily use their own adaptions outside of this general SRD).

The SRD rules. are provided free to use under the ORC licence. For plug-in genre-modules to compliment these base rules, see the main Octas page.

Manuals:

0. Licence
1. Introduction
2. Creating a Character
3. Playing an Adventure
• Game-play Example
4. Extended Rules

Resources:

• Character Sheet: SVG version PDF version
• Character Possessions Sheet: SVG version PDF version
• Octas Grid-paper set (square and hexagonal, multiple scales): PDF versions, zipped

Appendices:

1. Formula Summary: Common tables and formula used in-game.
2. Information for Immigrants: Octas compared to other TTRPGs.
3. All your base: Why base-8? (author's ramblings).
4. Measure of a Something: Derivation of the Octas units of measurement.
5. Miniature Play: Tokens and figurines for physical play.
6. Playing Octas in Decimal .... and possibly other numeric bases.
7. Playing Octas in (actual) Octal: Game-play for Mathematical Masochists!

[Return to main Octas page]