When looking for downloads, it is important to distinguish between official versions and third-party sites like "Ocean of Games." The Risks of Third-Party Downloads
If you are returning to the game after a long time, the modern version (released in late 2019 and updated through 2022) includes: age-of-empires-2-download-free-2022-ocean-of-games
If you tell me more about what you're looking for, I can help further: When looking for downloads, it is important to