Grow a squad of volcanic heroes strong enough to conquer stage 30 and erupt for permanent power.
Heroes fight automatically and enemies drop gold. Reinvest gold into Damage, Vitality, Gold Find and Arcane upgrades — costs scale by 1.15x per level, so keep buying whatever is cheap.
Fire hero skills manually (keys 1-6) to burst down waves. Bosses appear at the end of stages 5, 10, 15, 20, 25 and 30 and drop gems that unlock Pyre, Obsidian and Flare.
From stage 15, ERUPT resets gold, upgrades and stage but grants ashes (+2% damage each, forever). Push deeper each run — Voldrath waits at stage 30.
Yes — it is completely free, browser-based, with no download or registration required.
Yes. Your team keeps fighting while you are away and you collect the gold (60% rate, capped at 8 hours) when you return.
Nothing is lost: you simply fall back one stage and keep farming. Upgrade and push again when ready.
From stage 15 you can reset your run for ashes. Each ash grants +2% permanent damage, making every future run faster and deeper.
Bosses drop gems (also earned from goals). Spend gems in the ROSTER menu to recruit Pyre, Obsidian and Flare.
Yes — progress auto-saves to your browser's local storage every few seconds and when you leave the page.


Ashfall Idle is an idle RPG set on a volcano that never stops erupting. You recruit a squad of up to six stylized heroes who fight entirely on their own: melee warriors lunge, mages sling fireballs and clerics mend wounds while waves of cinder imps, magma hounds and obsidian golems pour in from the right. Every kill drops gold you invest in four upgrade tracks, and every fifth stage hides a boss guarding precious gems used to unlock the second half of the roster. Each hero carries one active ability on a radial cooldown — from a screen-shaking inferno nuke to a frost nova that freezes the entire wave — so you can always tip a losing fight by hand. The loop is tuned for short sessions: a few minutes of smart upgrades pushes several stages. When the mountain out-levels you, wipe costs nothing but one stage of progress, and from stage 15 the Erupción prestige converts your deepest run into ashes worth +2% permanent damage each. Progress is saved locally and offline earnings accrue for up to 8 hours, so the squad keeps grinding between sessions. It is completely free, runs in any browser, and requires no download or registration.