Moonfall
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Guides, lore & dispatches

The Moonfall Blog

Guides, lore, and field notes from Moonfall — the free, AI-native card game where every card play is a prompt and, with the Manga Pass, a match can become a manga story.

A hand reaching toward glowing cards set into the bark of a great dark tree. Launch trailer Can a Card Game Play Like a Tabletop RPG? Moonfall does it with an AI Game Master. You choose what your card does, and the AI decides what happens. Its launch trailer, Tonight, shows how. 6 min read Read → A fallen log carved with glowing blue runes, a light shining from its hollow end. Film First Night: A New Card, From Fusion to First Sale In First Night, a horse and a log fuse into a Trojan Horse. The film follows the new card from its discovery to its first match and listing. 1 min read Read → A violet dragon of jagged crystal scales roaring from a rocky crag under a night sky. Moon Foundry Can You Fuse a Pebble Into a Dragon in Moonfall? You can try. In the Moon Foundry, every card you discover can be fused again. Here is how a chain of fusions works, and why no path is set. 2 min read Read → A dragon with golden horns and violet scales, coiled and glaring with one red eye. Moon Exchange Can You Sell the Cards You Discover in Moonfall? Yes. Cards you discover in the Moon Foundry can be sold to other players on the Moon Exchange for Stardust. Here is how that economy works. 2 min read Read → A river of small pink lights spiraling up through a starry sky to a glowing lantern. Film Remember Your First Booster Pack? A Moonfall film about the first booster pack, the binder and the shoebox, and how card packs, your Collection and Stellar cards work in the game. 4 min read Read → A blue and gold wyvern crackling with lightning, its wings spread over a stormy shore. Film What Happens in a Moonfall Match? The Moon Cracks Open The Moon Cracks Open follows one real Moonfall match, Kitsu against Einar Skjoldr, set to a song made from lines its AI storyteller wrote. 2 min read Read → A vortex of violet and teal light swallowing the sky above dark cliffs. Film What Happens When a Card Says the World Ends? Jormungandr's card reads that when it releases its tail, the world ends. The Serpent Lets Go asks what a Valkyrie could do about it. 2 min read Read → A bearded wizard in a star-covered robe raising a crystal staff in a cave of books and potions. Gameplay The Original Moonfall Demo: Storytelling Instead of Stats The original Moonfall demo asked what happens when simple storytelling replaces complex mechanics. Here is what it showed, and how that idea plays today. 3 min read Read → A winged summoner holding a blade above a sea of cloud, weighing what passes and what does not. AI playtesting notes Automated Self-Play for AI Card Game Balancing Moonfall plays complete matches against itself and scores every finished one, so unclear cards get caught before players meet them. What ten batches showed. 3 min read Read → A luminous feathered serpent coiling through a violet, star-strewn sky. Getting started How to Play Moonfall A beginner's guide to Moonfall, the AI card game where every card play is a prompt and an AI Game Master narrates what happens. 4 min read Read → A vast cosmic dragon wreathed in nebulae, filling a dark violet sky. The category, explained What Is an AI Card Game? An AI card game uses a language model to adjudicate play instead of a fixed rules engine. Here's what that means — and how Moonfall works. 4 min read Read → A witch of the deep woods stirring a cauldron of starlight under a violet moon. Creation The Moon Foundry — A Guide to Fusing Cards How the Moon Foundry works in Moonfall — fuse two cards into a new one, discover recipes, and forge cards of your own. 5 min read Read → A colossal astral titan of stars and stone presiding over a darkened battlefield. Under the hood How Moonfall's AI Game Master Works Inside the AI Game Master that reads every card in context, narrates the match, and rewards creativity over net-decking in Moonfall. 4 min read Read → Nymori faces the viewer beneath a starry sky, her body formed from countless warm living lights. Creation Moon Dream — Conjure a Personalized Summoner How Moon Dream works in Moonfall — turn a few words into a personalized summoner and full spell deck, then take them into battle. 4 min read Read → A colossal sea serpent of blue scales coiling above a tiny ship at dusk. Collecting Collecting Cards, Packs & Stellar Variants A collector's guide to Moonfall — opening card packs, spending Stardust, chasing animated Stellar cards, unlocking cardbacks, and trading on the Moon Exchange. 3 min read Read → A dark maelstrom of black and violet, drawing loose cards down into a starless void. Design notes Why Moonfall Has No Health Bars Moonfall's cards have no attack or health numbers on purpose. Here's the design thinking — why an AI referee and pure prompts beat damage math. 4 min read Read → A maiden with star-woven violet hair, trailing constellations across a deep purple sky. Stories Share Your Story — Turn Your Match Into a Manga With the Manga Pass, a Moonfall match can become a shareable manga storybook. Here's how the panels are made, how to share them, and how to read a duel like a comic. 3 min read Read → A golem of black rock with glowing molten seams, standing in fire under a violet sky. Moon Foundry What Is a Sandbox Card Game? A sandbox card game lets players add new cards to the game itself. In Moonfall you do it by fusing two cards in the Moon Foundry. 3 min read Read → A roaring lion with a goat's curled horns and a serpent for a tail, flames streaming from its mane, on a rocky slope under a violet sky. Moon Foundry A Card Game for Infinite Craft Fans: Fuse Two Cards, Discover a New One Enjoy Infinite Craft? In Moonfall you fuse two cards. If no one has fused that pair before, an AI designs a new card, and you are credited as its discoverer. 5 min read Read → A white-bearded archmage in gold-and-crimson robes, crowned with a halo of small glowing cards, holding a golden staff. The category, explained Every Kind of Digital Card Game, and Where Moonfall Fits Online collectible card games, digital trading card games, deckbuilders and story card games: the well-known digital card games of each kind, and where Moonfall fits. 11 min read Read → A single glowing card floats in a dark field of stars. Card balance How Moonfall Balances Its Cards In Moonfall, a card that wins too often costs one more mana, and a card that loses too often costs one less. Here is how it works. 5 min read Read →