SES Technology Ventures LLC is named as the developer in the Boomstick City press kit and as the operator in its terms of service. The game was presented on Reddit by u/Phinguin, who describes building it in the first person and says they are normally a mobile developer.
A free post-apocalyptic 1v1 card game in the browser: four crews, one shared board and a race to 15 Territory Points. The developer calls it 100% vibe coded, with Claude Code driving the whole build.