Unity 2021 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
Unity 2021 reached end of life on 18 Feb 2025. It no longer receives security fixes.
594 days without security patches
Recommended action: upgrade to Unity 6000.6. Support timeline
Official dates from the Unity release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 11 Apr 2022 | 4y 6mo ago |
| Security Support ended | 18 Feb 2025 | 1y 8mo ago |
| Latest release | 2021.3.45f2 · 3 Oct 2025 | final |
Where to go from 2021
Recommended target: Unity 6000.6.
The newest actively supported branch is Unity 6000.6 (latest release 6000.6.4f1).
Frequently asked questions
Is Unity 2021 still safe to use?
Unity 2021 reached end of life on 18 Feb 2025, 594 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Unity 2021?
Yes — the final release (2021.3.45f2) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Unity 2021 to?
Upgrade to Unity 6000.6, the newest actively supported branch.
All Unity versions
6000.6 supported 6000.5 EOL 2026 6000.4 EOL 2026 6000.3 supported 6000.2 EOL 2025 6000.1 EOL 2025 6000.0 supported 2023.2 EOL 2024 2023.1 EOL 2023 2022.3 EOL 2025 2022.2 EOL 2023 2022.1 EOL 2022 2021 EOL 2025 2021.3 EOL 2025 2021.2 EOL 2022 2021.1 EOL 2022 2020 EOL 2023 2019 EOL 2022 2018 EOL 2021 2017 EOL 2020