Downloading older software like requires caution. While "free download" advertisements often lead to third-party sites, the safest and most reliable way to obtain this specific version is through official Unity Technologies channels. The Official Way: Unity Download Archive
: Download the Unity Hub for Mac . This is the central management tool for all your Unity versions and projects. advertisement Unity 2018 for Mac Free Download
Unity maintains an extensive Download Archive where every version ever released is still available for free. To get Unity 2018 on your Mac: Downloading older software like requires caution
Unity 2018 was a landmark release that introduced several core technologies still used today: Unity 101: How to Install Older Versions of Unity advertisement Unity 2018 for Mac Free Download