Rudy Faile is named in Kindlefall's press kit as its solo developer. The game was posted on Hacker News by the account djbiccboii, who says every earlier game they made was built the traditional way. Location is not stated.
A free top-down 3D action roguelite in the browser: ten burning floors, six heroes, ten bosses and 270+ boons. The code was written by AI coding agents under the solo developer's direction.