Short answers, pulled from the story.
Bethesda Game Studios began work on The Elder Scrolls V: Skyrim in 2006 under the supervision of Todd Howard. Full development started following the release of Fallout 3 in 2008 with a team of roughly one hundred people.
The game released worldwide for Windows, PlayStation 3, and Xbox 360 on the 11th of November 2011. A remastered version subtitled Special Edition containing all three DLCs plus graphical upgrades released on the 28th of October 2016.
By June 2023, The Elder Scrolls V: Skyrim had sold over 60 million units globally according to Bethesda announcements. Total sales through the first week generated an estimated US$450 million and rose to around US$620 million by December 2011.
Three downloadable content add-ons were released including Dawnguard, Hearthfire, and Dragonborn bundled into the Legendary Edition released in June 2013. Dawnguard arrived on Xbox 360 in English-speaking territories on the 26th of June 2012 before releasing for Windows on the 2nd of August 2012.
Crashes and slowdowns plagued PlayStation 3 versions when save files exceeded six megabytes due to extended gameplay times. Various crashes affected Windows versions requiring multiple patches to address stability concerns while texture down-scaling occurred on Xbox 360 when running from hard drive.