Stop a broken save file from wrecking your city builder on load

A city that loads half-empty, with buildings floating outside the map or a treasury showing nothing at all, usually comes from one bad value in the save. Here is a checker that reads a save before the game trusts it and tells you exactly which entry is wrong.

Why this works

A save file comes from outside the game, from a disk or a browser, so nothing promises it is still what the game once wrote. Checking everything before use turns a mysterious broken city into a plain list of what is wrong, and that list is the bug report.

When not to use it

Skip it for a throwaway prototype whose saves you delete after every change, or a game with no save at all. A checker also only finds what you taught it, so if the game changes its save layout often, convert old saves first and check afterwards.

In the full entry

• What to build, step by step
• Starting values and the reason for each
• 4 common mistakes and the fix
• 35 lines of example code with 4 checks that pass
• How your AI shows you that it works

Say this to your AI

Use the Spielerando entry "Stop a broken save file from wrecking your city builder on load" (read_entry city-save-file-validator) in my game. Build it step by step, and show me how you checked that it works.

Or skip this and connect the MCP: your AI then finds all of this by itself.Connect the MCP