Official Update 13 (technically corresponding to official game version 1.9) was the final major stability patch released for the original 32-bit "Legendary" edition of Skyrim before Bethesda shifted focus to the 64-bit Skyrim Special Edition .
Skyrim set an impossibly high bar for open-world action RPGs when it originally launched. However, the ambitious scope of exploring the frozen realm of Tamriel meant that the base game required significant post-launch tuning.
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