Res Mythica throws you into a brutal world of power, betrayal, and monstrous wonders. Forge alliances, shatter oaths, or rise as a legend with a system built for creative roleplay, rising tension, and bold narrative turns. Varied, tactical combat and high-stakes choices drive every session toward chaos or glory. In a land ruled by ambition and monsters, history remembers only the daring… and only you decide how much you’re willing to risk.
The System
The game uses innovative mechanics to create a narrative experience in which the players and the dice lead the story without compromising on tactical decision-making both in and outside of combat. A faction system helps the GM create a rich world and provides plot hooks for players, while bonds and patron deities encourage deep role-play and an immersive dive into classical antiquity.
Tactical, Narrative, & Player-Driven:
The World
Res Mythica is inspired by the rich tapestry of ancient cultures, mythologies and politics. Play in a fantasy setting where the gods are real and magic is perilous, or in the cut-throat historical world of the Roman Republic and its satellite states.
Res Mythica is designed to allow you to make the setting your own. Enemies, factions, player abilities… all are modular to let you play anything from a high-fantasy universe in which magic is pervasive to a grounded historical adventure.
Community & Updates
Res Mythica is currently being developed. If you are interested in joining a playtesting group, following development or have questions/suggestions join the Callisto Discord. If you think you might be interested in playing the finished game, subscribe to the newsletter.
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