Are you looking to or open an existing legacy project ? What type of game (2D or 3D) are you planning to develop?
Do not download Unity from third-party torrent sites. These files often contain malware. Use the official Unity archive instead. Navigate to the page. Click on the Unity 5.X tab. Scroll down to version Unity 5.6.7 . Open the Downloads dropdown menu for your OS. Select Unity Editor (32-bit) or the Torrent link. Run the installer and follow the prompts. Alternative: Developing For 32-Bit Systems Unity 3d 32 Bit Download Free
Many users confuse two different concepts: Are you looking to or open an existing legacy project
: Developers managing older projects built on 32-bit systems may need the matching engine version to maintain compatibility and prevent breaking changes during updates. Features of the Free Version These files often contain malware
: You will be unable to use many modern assets from the Unity Asset Store that require newer engine versions.