GAMMADARK

A Post-Apocalyptic RPG Designed by Drew "Jinjeet" Philbrick - Bardic Mischief

Gammadark is a tabletop roleplaying game set in the devastated world of After-Earth , a planet ravaged by a catastrophic event known as The Darclysm . This game blends old-school post-apocalyptic RPG elements with the Shadowdark rule system , offering a rules-light, fast-paced experience focused on exploration, survival, and uncovering the remnants of a shattered world.

The Setting: After-Earth

Gammadark takes place in After-Earth , a post-apocalyptic world forged by science, shattered by war, and reshaped by forces beyond comprehension . A century ago, humanity's technological advancements reached their peak--but an extraterrestrial invasion forced humankind to weaponize dark matter, wormhole technology, and dimensional rifts in a desperate bid for survival. The result was The Darclysm , an apocalyptic catastrophe that destroyed civilization, mutated all life, and left the planet a fractured wasteland .

Now, After-Earth is a chaotic and lawless realm , where remnants of old-world technology mix with mutated horrors, sentient machines, and power-hungry factions . Survivors struggle to endure in a world where the past is both a treasure trove and a curse .

Game System: Shadowdark Adaptation

Gammadark runs on the Shadowdark RPG system , a streamlined old-school-inspired ruleset designed for quick play, high-stakes decision-making, and intuitive mechanics . The system keeps the game focused on player ingenuity rather than complex mechanics.

• Mutation System - Mutations in Gammadark work similarly to spells in Shadowdark. Players with mutations make Mutation Checks instead of Spell Checks to activate their abilities.

• Ancient Tech System - The technology of the old world is classified into five tiers (Tech I through Tech V), with higher tiers being more dangerous and unpredictable.

• Dark Zones & Reality Warping - The game world is heavily influenced by dark energy, radiation, and dimensional rifts , leading to unpredictable effects that can alter gameplay.

Radlings, the wasteland calls--do you have the guts to answer? The Radlands are crawling with mutant warlords, rogue AIs, and tech so powerful it rewrites reality-- only the bold, the desperate, and the truly unhinged will survive! Grab your scav, charge your blaster, and dive headfirst into the chaos, because in GAMMADARK , the only way forward is through fire, fury, and the unknown!

Designed and Written by Drew "Jinjeet" Philbrick Cover Art by Ivy Fowler Map Assets by Atryikk Mazenc All other artwork created using Midjourney AI.

Adapted for Fantasy Grounds by: David Cole

Requires: The free Fantasy Grounds virtual tabletop (VTT) software and the Shadowdark RPG ruleset.

Screenshots may differ from what you see in-game based on the extension and ruleset you have loaded.

Owned by Bardic Mischief. Copyright (C) 2026. Used with permission. All rights reserved.

Released on April 15, 2025

Designed for Fantasy Grounds version 4.6.6 and higher.