Unity download archive

From this page you can download the previous versions of Unity. As always you can use the free version, or if you have a Pro license, enter in your key when prompted after installation. Please note that there is no backwards compatibility from Unity 4; projects made in 4.x will not open in 3.x. However, Unity 4.x will import and convert 3.x projects. We advise you to back up your project before converting and check the console log for any errors or warnings after importing.

Version Installer Release notes Built-in shaders
Unity 4.5.2
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Unity 4.5.1
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Unity 4.5.0
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Unity 4.3.4
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Unity 4.3.3
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Unity 4.3.2
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Unity 4.3.1
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Unity 4.3.0
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Unity 4.2.2
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Unity 4.2.1
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Unity 4.2.0
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Unity 4.1.5
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Unity 4.1.4
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Unity 4.1.3
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Unity 4.1.2
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Unity 4.1.0
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Unity 4.0.1
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Unity 4.0.0
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Unity 3.5.7
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Unity 3.5.6
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Unity 3.5.5
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Unity 3.5.4
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Unity 3.5.3
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Unity 3.5.2
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Unity 3.5.1
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Unity 3.5.0
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Unity 3.4.2
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Unity 3.4.1
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Unity 3.4.0
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Resources
Unity Remote Source Download