Matthew Jarmak

Matthew Jarmak (better known as Aryx or Aryxymaraki) is a freelance RPG writer and designer specializing in the math of systems design.

announcements

All Systems Go is Go

Flipping switches and cross-connecting power converters in this solo mecha RPG.

Matthew Jarmak Nov 7, 2025

announcements

Explore the Shattered Lands!

A supplement for Worlds Without Number or other OSR games.

Matthew Jarmak Jul 23, 2025

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The Back of the Book

Rascal is a tabletop roleplaying game and culture outlet striving to sustainably publish voicey journalism that is compelling, deeply-reported, and fearlessly honest. We’re also a little cheeky.