Visit the official Unity Download Archive → Select 5.6.6f2 → Click the dropdown → Download 32-bit → Build your legacy masterpiece.
To download Unity 5.6 32-bit version, follow these steps:
32-bit applications generally run without issue on 64-bit Windows. Modern macOS versions (Catalina and later) have removed support for 32-bit executables
If you are maintaining a legacy project, working on a low-spec or older 32-bit system (e.g., an old laptop, a Windows 7-era desktop, or a virtual machine), or need to publish games that run on outdated hardware, this guide is for you.
Before downloading Unity 5.6, ensure that your system meets the minimum requirements. The system requirements for Unity 5.6 are: