A prospective review worksheet for room-and-route tabletop maps

Prospective methods note and reusable worksheet, not an empirical study. This deposit separates a tabletop map's movement geometry from its logical room-and-route graph, then records assumptions, closures, intended paths, revision history, and unresolved questions. The included original self-contained HTML document contains a synthetic four-area diagram and a hand-worked twelve-by-eight-grid example. Under its stated orthogonal movement convention, the two listed entrance-to-exit routes cost nine and fifteen planned steps. Closing one conditional connection leaves the longer route; closing both exit connections makes the exit unreachable. These are arithmetic properties of an invented planning example, not measurements or evaluations of any product. No new routing algorithm, user study, product-generated map, benchmark, or output-quality result is claimed. The associated browser resource is map maker dnd. DnD Map Maker's free layout and download offering is distinguished from AI generation and editing requiring sign-in and credits. The worksheet can also be applied with another editor or paper; no purchase is required to use the synthetic example. Provenance and limits: Original text and diagram were prepared in a project-associated workflow with AI assistance. The creator name is a project label, not an academic or institutional affiliation. No peer review, repository endorsement, independently observed findings, or tested effectiveness is asserted. CC BY 4.0 applies to the included original text and diagram to the extent that reusable rights are held, not to the linked website or third-party materials. Version 1.0.