RUSTBLOOM

You never find the key. You forge it.

In most games like this, a locked thing asks what you are carrying. A bramble wall wants the fire rod, and there is exactly one fire rod.

Here a locked thing asks what your tool CARRIES.

That wall does not want an item. It wants HEAT 2+. An EMBERCUP head answers that — and so does a CLEAVER wrapped in a SPITE binding, and so do seventy-six other things you might have built. Every barrier in the Ashfen has many solutions, so two players open the same world differently.

Your tool is three parts

• HEAD — the verb. What it fundamentally does.
• HAFT — the shape of the swing. Reach, arc, speed.
• BINDING — the side effect, and the cost.

8 heads × 6 hafts × 6 bindings = 288 tools. Every one of them draws its own portrait from its own parts, at the moment you build it. There is no sprite sheet in this game.

And the same three parts fight for you

A husk wears its weakness openly, in that property's own colour. The tool you forged to open a wall is the tool you then have to swing at whatever is behind it — which is the tension the whole thing turns on. THE RUSTBLOOM at the end of the fen turns through ROT → HEAT → EDGE and tells you so the moment you walk in, because that fight is a test of a kit you built on purpose. Carry three. Swap with 1 2 3.

Dying is not losing

Death returns you to the forge. You keep every part you found, every gate you opened, and every reforge you paid for. You lose half the scrap in your pockets, and the husks come back. There is no save button — it writes to your browser every time something happens you would hate to repeat. Close the tab whenever you like.

Controls

WASD / arrows move · SPACE swing · 1 2 3 switch tool · E work the anvil · M sound

Free, in your browser, no account, no download. Made by Core Systems Asset Factory.

More free browser games from this studio

• Otterbound — a river run with a current that never stops.
• The Last Flock — survive the swarm, one bird at a time.
• Charge Barge — haul power across a grid that keeps changing.
• Starchart Ascension — chart a sky that rewrites itself.
• Banneret: Succession — a kingdom, and who is left to inherit it.

All free, all in the browser, no account and no download. The whole catalogue is at csaf.itch.io.

More free browser games from CSAF

Every one of these plays in one click. No install, no account, and they all save as you go.

• HALFLIGHT — Everything in the vault is decaying. That is what pays you.
• PRISMHORN — You never cast a spell. You cast a rainbow.
• OTTERBOUND — Six otters, one raft, and a river that never ends the same way twice.
• CHARGE BARGE — Drive a storm-powered ironclad up an insane hostile coastline.
• THE LAST FLOCK — Your army is a crowd you shape with movement alone — and it dies.
• BANNERET: SUCCESSION — You never move a knight. You plant a banner.
• STARCHART — Every voyage you fly is inscribed forever. The route you took IS the constellation.

We also make the parts

Core Systems Asset Factory builds pixel-art packs and engine tooling for developers. If you build games as well as play them, these are ours:

• VERDANT 01 — Overworld — 239 tiles and four complete 47-mask autotile sets, for RPG Maker MZ, Tiled and Godot.
• VERDANT 02 — Elevation — 149 tiles of top-down elevation: a 47-mask plateau autotile and a four-band cliff.
• MOURNCREST 02 — The Pale Choir — five cultists, four directions, three-frame walks, at native 64px and 128px.
• VERDANT 00 — free sample pack — 64 tiles with one complete autotile, free, if you want to try them first.

Plus plugins and editor tools for RPG Maker MZ, GameMaker, Unity and Unreal — the full catalogue is here.