when did oblivion release

The Elder Scrolls IV: Oblivion (the original game most people mean by “Oblivion”) released on March 20, 2006 in North America and March 24, 2006 in Europe.

If you were instead asking about The Elder Scrolls IV: Oblivion Remastered , that version was shadow‑dropped on April 22, 2025 during Bethesda’s livestream showcase.