Fatecaller

A story campaign, quick play across three factions, a daily draft ladder, and a deck-building workshop where your brews fight the champions a metagame simulation evolved. The only randomness in the whole game is the shuffle, which is why the attack forecast can tell you exactly what a trade will do before you commit. Now living full screen at fatecaller.com.

TypeScript · machine-certified balance · instant boot

the TypeScript build · same rules engine the server runs · play full screen ↗

How to play

  • tap a card to read it, then hit PLAY to cast it
  • tap your unit, then a target, then ATTACK to commit
  • amber guards must be cleared before anything behind them
  • the workshop button on the deck screen opens the editor
  • log and concede live in the top bar

Changelog

  • 2026-07-17·A coached tutorial for new players. A guided first match walks you through the essentials one step at a time: energy, playing a unit, attacking the hero, clearing a guard, and placing a unit in your line, right through to the finishing blow. It runs automatically the first time you play, and a TUTORIAL button on the deck screen replays it whenever you like.
  • 2026-07-17·Set 9: positioning. Your board is a line now, and order matters. Place a unit where you want it, PLAY drops it at the end, or tap one of your units to slot the new one in beside it, and new cards pay it off: flank buffs the units next to where it lands, phalanx grows for each ally it sits between, chain splashes a unit and its neighbors, and Enfilade hits both flanks of a spread-out line. Certified on two seeds with all three colors reaching the crown; the bots and the workshop gauntlet play the line too.
  • 2026-07-16·New name, new world: the game is now Fatecaller. Same deterministic engine and machine-certified balance, re-skinned into a fantasy of fate and foresight where the no-luck rule is the whole point. The three archetypes are now the Emberseers, the Wardens, and the Manyfold; the traps you lay face up are omens; every card was renamed to match. No luck, only who foresaw further.
  • 2026-07-16·Set 8: two mechanics that reward sequencing. Overload cards hit above their cost, then dock your energy next turn, so you buy a big play now and pay for it later. Combo cards fire a bonus only when they are your second play of the turn, rewarding the aggressive chains. Certified on two seeds with all three colors reaching the crown; both mechanics adopted, and the workshop and ghost pool play them back at you.
  • 2026-07-16·Set 7: Stoke, a new mechanic. Feed one of your own units to the furnace for a burst of burn, cards, or armor, and the fed unit's death effects still fire. Certified on two seeds, adopted into the meta, and it fights back in the workshop and the ghost pool. Plus a daily leaderboard and ghost matches against real players' decks.
  • 2026-07-15·The engine transplant: Slagworks now runs as native TypeScript, proven bit-identical to the Godot build across 400 recorded games. Instant boot, no download. The workshop became a binder: eight named decks, autosave, and multicolor brews that fight the open meta. Local records start fresh with the new build.
  • 2026-07-15·The Draft: open-color, machine-certified. Today's Mine deals everyone the same twenty offers; pilot your picks through a gauntlet of rival drafts and champions until three losses.
  • 2026-07-14·Set 6: rigs, traps laid face up so you can play around them. Certified on two seeds; the workshop gauntlet now fights back with them. Plus a scrolling card browser and a simulation-backed attack forecast.
  • 2026-07-14·Fatigue is now visible: empty-deck burns are named in the log and floaters, and the hero panel warns with the next burn size.
  • 2026-07-14·Fixed the defeat-screen bounce: opening the workshop after a loss no longer snaps back, and the loss is only recorded once.
  • 2026-07-19·Workshop filters: type, cost, mechanic (guard, rush, draw, rite, offering, combo, positioning), and a find-by-name search stack with the faction tabs.
  • 2026-07-18·Sound: a generative soundtrack with no audio files. The day seeds the melody (everyone hears today's song), the duel tightens as life runs low, and the whole thing is certified by an offline render test.
  • 2026-07-18·Claimed usernames: sign in and pick a unique name that follows you everywhere; claimed names wear a mark on the leaderboard.
  • 2026-07-18·Accounts: sign in with an email code and your progress becomes a cloud save that follows you to any device. Optional; anonymous play unchanged.
  • 2026-07-18·Duels: challenge a friend to the exact same deal (same deck, foe, and shuffle), compare readings, codes verified by re-simulation. Plus save codes: your whole progress as one copyable string.
  • 2026-07-18·Story Chapter II: The Fraying. Three bosses that bend the rules, signature decks for every champion, and each cleared boss's deck unlocks for quick play.
  • 2026-07-18·Hindsight: chess-style post-game review. Step through your turns, see provably missed kills and the planner's stronger line, then take over and play the alternate future for real.
  • 2026-07-18·Today's Puzzle: a daily find-the-exact-lethal with a proven minimum, generated deterministically from the date on every device, with streaks and a shareable result.
  • 2026-07-17·Story mode chapter one: three champions, real fights. Mode-first home screen, slide-apart placement with a ghost preview, full screen, and the move to fatecaller.com.
  • 2026-07-16·Slagworks became Fatecaller: fantasy re-theme across 119 cards, plus set 9, the positioning set, certified on the first attempt.
  • 2026-07-15·A coached tutorial that pins the exact deck order, so every step is always true. The coin flip, desktop resolution, and a pile of paper cuts.
  • 2026-07-13·The mulligan screen grew a card preview: tap a card to read its full rules text, tap again to redraw it.
  • 2026-07-13·The Workshop deck editor, sets 4 and 5, the upkeep engine mechanic, concede, foe pace, win streaks.
  • 2026-07-12·Animations, the mulligan, the game log, and the balance patch that finally hit every target.
  • 2026-07-11·Hard mode, the card-game visual overhaul, touch fixes, and confirmation flows for plays and attacks.
  • 2026-07-10·Built and balanced: twelve patches and roughly eighty thousand arena games.
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