Sigilfen

Night on a haunted fen. You carry a lantern and nothing else you have to aim: your weapons fire by themselves. All you do is walk.

But your footsteps burn. They leave a glowing trail behind you, and when you close a loop with it, the loop becomes a sigil that scorches everything inside, keeps burning for a moment, holds the survivors in place and pulls in the gems. Lead the crowd round in a circle, close it, and watch the fen light up.

Gems level you up, and every level offers three choices: a new weapon, a stronger one, or a charm. Each weapon evolves when it is at full strength and you carry its charm. After eight minutes the Drowned Bell rises from the water. Silence it before dawn.

• Six weapons, each with five levels and an evolution: Ember Bolt to Sunspear, Moth Lanterns to Lantern Choir, Peat Smoke to Bog Mantle, Wisp Arc to Stormbell, Reed Scythe to Harvest Moon, Stone Hail to Falling Stars
• Eight charms, two of them for the sigil itself: Long Wick (a longer trail) and Sigil Brand (hotter sigils)
• Imps, bats, spitting toads, dashing wraiths, mud hulks, elites and rings that close in around you
• A boss that tolls rings of fire, calls imps and charges; sigils burn it three times as hard
• Short runs of about eight to ten minutes
• Three heroes and two weapons to unlock, saved in your browser
• A daily night: the same seed, hero and twist for everyone that day
• A low-poly three.js fen with lantern light, embers and synthesised sound
• Keyboard or touch; no ads, no payments, no accounts

Code and text written with AI assistance; checked by PN Scripts with automated tests. The fen is drawn and the sound synthesised by code.