Dungeon Ex Master, Systemfall: System Earth Book One, A Dungeon Apocalypse Reverse Isekai LitRPG

This story has regular perspective shifts. Be warned! ∞​ Dungeons fear the man who hunts them. Jack had finally escaped the monster-filled dungeons and high-stakes magic of the Otherworld. But his return to Earth offers no respite. Dungeons are invading, tearing through reality itself. Over his first quiet cup of coffee and a slice of his favorite pie, Jack realizes that his fight isn’t over. Earth is in the crosshairs of the very forces he thought he’d left behind, and only his hard-won skills as a legendary ranked Dungeon Master can keep the encroaching apocalypse at bay.​ Armed with his rune-etched machete, the trappings of a master summoner (an enchanted deck of cards, and dice), and his been-there-done-that attitude, Jack must navigate Earth’s new reality - a game of survival where ancient powers and modern threats collide. From the jump, he’ll forge alliances and reclaim his strength. After all, this isn't his first rodeo. He's not only a seasoned adventurer. He is an Ex Dungeon Master. And no one knows the art of conquering dungeons like Jack does. They wanted a war. They got Jack. What to Expect: A fast-paced, GameLitRPG adventure where dungeon incursions turn Earth into a battlefield of monsters, loot, and perilous quests. With RPG mechanics, strategic deckbuilding, and a gritty yet humorous tone, Jack brings his otherworldly expertise to Earth’s defense - with every skill earned, dice roll counted, and ally forged under fire.​ This Story Is About: Jack - a seasoned Dungeon Master torn from one world and thrust back into another, forced to defend a home he barely recognizes. His goal? Master the dungeon apocalypse and reclaim the world he sacrificed everything to return to.​ Additional Info: For fans of reverse isekai, RPG mechanics, card-crafting, and an anti-hero who’s seen it all, Dungeon Ex Master offers relentless action, tactical deckbuilding, and a protagonist with a dry wit and deeper resolve than he’s willing to admit. Prepare for a dungeon apocalypse like no other. Winner in the Royal Road Writathon challenge!