A Harrowfall battle with tanks, infantry and explosions across a red desert
A Harrowfall base with buildings, crystal fields and the build menu
Harrow key art: a crystalline intelligence above a planet
Umbra concept sheet with infantry and ground vehicles

A small studio making loud games, in public.

Playable now

Cantorite: Harrowfall

Three factions strip-mine a crystal that is secretly someone else's harvest, and the louder you mine, the sooner the reapers come. Real-time strategy that runs in your browser on desktop, tablet and phone.

How we build

90–95% of the games built by Claude

Hollowcut is one senior engineer guiding Anthropic's Claude. Claude writes the vast majority of the code; the human sets the direction, makes the design calls and owns quality. Every step is documented in the open.

Devlog

Built in public

Every step of the build is documented: what changed, why, and what it looked like at the time.

  1. Harrowfall

    From the first frame to today

  2. Hush MoneyComing soon

    The Hush Money devlog

  3. StudioComing soon

    How one engineer and an AI ship games