SC4Mapper is a compagnon utility of SC4Terraformer created by Wouanagaine for you to import and export SimCity 4 regions

SC4Terraformer is not required to use SC4Mapper.

SC4Mapper will help you to:

• Export a region you made in SC4
• Import a region that you have downloaded
• Take an overview picture of your region ( usefull for planning or including in a MD/CJ )

Starting with version v2026.1d, SC4Mapper is compatible with the following operating systems:

• Windows
• Linux
• MacOS

IMPORTANT NOTICE FOR MACOS USERS:

After unzipping, remove the quarantine flag before launching:

xattr -rd com.apple.quarantine SC4Mapper.app

This is required once because the app is distributed without an Apple Developer certificate.

This modernization (version v2026.1d) was carried out primarily using OpenAI Codex and Claude Code, supervised and verified by a human maintainer.