Hearthvale
A Stardew Valley-inspired farming and life-sim prototype with planting, crafting, and fishing, shared by Ziwen as an Opus 5.5 project.
The project
Hearthvale has a public browser project page. Ziwen describes a farming game with its own storyline and systems including planting, crafting, and fishing. These features are reported by the creator; the page was reachable on October 8, 2026, but a successful page request alone does not verify every game feature.
Where AI comes in
According to Ziwen, the prototype was built with Opus 5.5 in 54 hours. Twelve agents worked in parallel, each responsible for an area of the game, with critic feedback on their work. This describes the creator's reported workflow, not an independently measured development result.
For game makers
Explore how several familiar life-sim systems fit together in one playable prototype. The showcase also offers a concrete example of a creator dividing game-development work across multiple AI agents.
Go to the source
Original X postBased on the original post. AI production details are the creator's account.
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