AI Plays Slay the Spire

GPT-6 Astra played five Slay the Spire Act 1 scenarios at Ascension 20, the game's hardest difficulty, ten runs each, according to a report on the AI's play. The scenarios include Baseline seed 8EN5Q, CursedSilent seed 8EN5Q with the Cursed Run modifier, Easy trapDefect seed Q776W, Dense mapWatcher seed 286QJD with 25 forks and 4,040 possible routes, and Forced elitesIronclad seed C5W7N, which routes every path through at least three elite fights against Hexaghost. The Baseline map is described as exactly average across more than 100 million seeds on fights, elites, events, shops, rest sites, forks and possible routes, with the Slime Boss as its Act 1 boss.

A typical run. Out of more than 100 million seeds, this Act 1 map is exactly average on every count: fights, elites, events, shops, rest sites, forks and possible routes. The Act 1 boss is the Slime Boss. CursedSilent, seed 8EN5Q, Ascension 0, Cursed Run modifier The same map as Baseline. The modifier forces the player to pick up curses, cards with bad effects, but makes them stronger for every curse they hold, so they have to weigh the downsides against the boost. Easy trapDefect, seed Q776W, Ascension 0 One path reaches the Act 1 boss, The Guardian, after a single fight. A much harder path has up to five elite fights and can score more. It tests whether the player trades safety for points. Dense mapWatcher, seed 286QJD, Ascension 0 An Act 1 map with 25 forks and 4,040 possible routes, almost twice as many forks as Baseline, and no forced elites. Lots of route choices, and the Watcher's stances take care to play well. The Act 1 boss is The Guardian. Forced elitesIronclad, seed C5W7N, Ascension 1 Every path through Act 1 goes through at least three elite fights, and the Act 1 boss is Hexaghost, the hardest of the three. The hardest of the five scenarios on paper. Ascension 20The A20 tabs The same five scenarios at Ascension 20, the game's hardest difficulty, played only by GPT-6 Astra at max effort, ten runs each.