"Jon's work lovingly mixes a classical, somber visual tone with a contemporary approach and sensibility - and the results are beautiful!” - Steve Prescott: D&D, Magic the Gathering, World of Warcraft, Pathfinder, Shadowrun

“What strange, cosmic powers must run through Jon’s veins for him to conjure up the magic of Astromythos? This rpg is a doorway into Jon’s world and I’m eager to charge through it.” - Brian Stillman, Co-Director, “Eye of the Beholder: The Art of Dungeons and Dragons”  

“When I first experienced Jon’s work 2 years ago I instantly fell in love with his paintings and the lore he created within them. Jon is truly gifted as an artist and epic storyteller and does not disappoint. His work harkens back to the illuminated manuscripts of old. Beautiful and immersive.” - Diesel LaForce, AD&D illustrator for TSR

“Jon Sideriadis is an artist of extremely rare talent. He imbibes his drawings with mystery and magic. His latest compelling project conjures monsters from the black holes of space! Such an imaginative mind, his work will stimulate your brain and soul.” - Stefan Pokorny, Founder of Dwarven Forge

Astromythos: Lair of the Spider lord

What is this Project?

Lair of the Spider Lord is a tabletop rpg adventure set in the world of Astromythos, where heroes join living stars as they battle evil forces looking to rid the universe of its light! This 5e compatible story is filled with new game content based on the ground-breaking mythology series by award-winning author and illustrator, Jon Sideriadis.

Kickstarter Campaign Video

LAIR OF THE SPIDER LORD is available here;

The stars are vanishing one by one...

Men wage war now with the stars, with those who give them warmth and light. The cosmos fears and hates mankind, but men were corrupted against their will. Men do the bidding of black holes, of evil spider-stars called Photovores. They seek to slay the stars and extinguish all light in the cosmos. And so the stars fought back.

To win, men strove, and they were crushed. Yet their king would not surrender. He has hired you to help restore his power. Now you must choose to side with him or the stars.

Rekindle your campaign with a fun but powerful story in this astro-mythic adventure that takes players from levels 10 to 15:

  • Face black hole monsters, star spiders, living volcanoes, asteroids, meteors, and evil human star-slayers.

  • Explore the vital organs of living mountains.

  • Survive spider-infested asteroids and moon-castles.

  • Fight your way through the blood and bones of giants.

  • Sneak past treacherous trap-door spiders, and sprightly cosmic tricksters.

  • Restore the balance in this world so that you can return to yours.