If you're here looking to play the Witcher because of the TV show, consider it carefully. This game is old; it has no convenient fast travel, you can easily softlock yourself out of completing quests by doing things in the wrong order (despite the 'right' order never being told to you), and while the story is absolutely amazing, the gameplay itself is an absolute pain on the easiest of difficulties. Modding isn't a requirement to make the game playable, but it does help. A guide is probably a must-have, if you don't want to do a lot of reloading old saves or want to only play the game through once.
If you see all that and think, "that doesn't sound like much fun," consider starting with the Witcher 3 and looking up summaries for the first two games. It'll be a much more player-friendly experience.
If see all that, and decide you're here for Geralt of Rivia, no matter what? Awesome! The game is worth full price, but go ahead and grab it on sale to be smart. Enjoy!

If you're here looking to play the Witcher because of the TV show, consider it carefully. This game is old; it has no convenient fast travel, you can easily softlock yourself out of completing quests by doing things in the wrong order (despite the 'right' order never being told to you), and while the story is absolutely amazing, the gameplay itself is an absolute pain on the easiest of difficulties. Modding isn't a requirement to make the game playable, but it does help. A guide is probably a must-have, if you don't want to do a lot of reloading old saves or want to only play the game through once. If you see all that and think, "that doesn't sound like much fun," consider starting with the Witcher 3 and looking up summaries for the first two games. It'll be a much more player-friendly experience. If see all that, and decide you're here for Geralt of Rivia, no matter what? Awesome! The game is worth full price, but go ahead and grab it on sale to be smart. Enjoy!