D8s

Octas


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 optionally hidden from players behind some simple conversion maths. It also uses a 'destructive stats' mechanic whereby combat damage temporarily (or in extreme cases permanently) reduces character scores directly, resulting in a game mechanic representation of fatigue.

A playable base game is (will be) available for free use here. Hard-copy books and related accessories are unlikely as I don't expect that amount of interest in my downright-quirky little TTRPG!

WARNING: This is a Work-in-Progress.

Octas is probably not fully-playable at this stage. It is definitely not properly play-tested for balance. Missing links indicate where planned content isn't complete!

This is primarily my own private intellectual exercise, hobby, and possibly a demonstration, but if anyone ever gets any other use out of it, that's nice, too!

The Octas/fallen content is on hiatus while I work on the Octas/cyber version. Mainly because initial work on the Cyber game has caused me to rethink a number of key aspects of the overall game mechanics and I may want to roll some (though probably not all) of this into the SRD once I have the smaller-scope Cyber game properly fleshed-out and a bit play-tested.

The more 'grounded' style of the Octas/cyber necessitates some changes from the more general Octas SRD document, so while all Octas games are very similar, Octas/cyber does not directly use the SRD that is intended to be shared amongst the broader-scope Octas games (Fallen, and tentatively Crash, for now). This may change at a later time.

Fallen and Crash, while entirely different genres are intended to be set in the same game-universe, just separated by hundreds of thousands of years in time!, so sharing most of a rule-set makes sense for that reason, too.

Cyber

(In active development)

Octas/cyber

Resources for the CyberPunk variant of the game.

Note: Octas/cyber does not use the below common SRD.


SRD

 

Octas SRD

System Reference Documents distilling the basis of the below (but not above!) Octas D77 games.


Fallen

(Development hiatus)

Octas/fallen

Resources for the default Fantasy-themed world.


Crash

(Proposed content)

Octas/crash

Resources for the default SciFi-themed world.


Octas, Octas/cyber, Octas/fallen, and Octas/crash materials are Copyright 2022-2025 Glenn Alexander.