Prototype 0.5.5
The itch.io release is a smaller, name-your-own-price prototype credited to elyaradine, sarandipityx, and raithza. It has separate Windows, Linux, and macOS downloads.
Commercial Steam release
The full game has the complete town, story commissions, a much larger design library, achievements, ongoing patches, and official Windows and macOS support.
Guide policy
Every page will identify whether information belongs to the prototype or the full release. Prototype fixes and controls will never silently fill gaps in a full-game guide.