Confirm versions and requirements
Check that the intended Tool Progression build is enabled once, its dependencies are present, and RimWorld is a supported version. Confirm any required DLC.
Check the path to the item
Look for research, workbench, material, and mod-setting requirements in the installed build. A feature described on the project website may not be included in every testing release.
Separate a conflict from a requirement
Use a backed-up test save or fresh test colony and the smallest supported mod list. Record your load order and settings. Never experiment on your only copy of a save.
Ask with enough context
Post the item name, versions, expected behavior, and checks you completed in Getting Started & Help. If it appears to be a reproducible bug, follow the bug-report guide.
These are introductory project notes. Your installed build’s descriptions and release notes take precedence for recipes, values, dependencies, and compatibility.