What can The Witcher books and video games tell us about the show?
This will absolutely be an action show, judging by clips released by Netflix, which include sword fights staged in streets, massive battles, uses of magic energy, and lots of creepy monsters. Did we mention Geralt slays these things for a living? The Witcher universe features all manner of fantasy beasts, including cockatrices, wraiths, basilisks, and giant centipedes. We don't know yet which ones will make it into the show, but Geralt will undoubtedly go up against plenty of them.
The team behind the show have compared their use of monsters more to horror than traditional fantasy: "We’re definitely taking the fantasy out," visual effects supervisor Julian Parry told SFX magazine. "I mean, it’s fantastical but in a grounded horror sense. For example, with Striga [a woman cursed to live as a monster], that's one gnarly-looking thing. That’s very unpleasant!"
The video games published by CD Projeckt, particularly the latest, The Witcher 3: The Wild Hunt, emphasize Geralt's needs to survive as he tackles these gruesome beasts. He has to eat food to regain strength, brew potions to ward off toxins, and periodically repair his weapons and armor to make sure they stay effective. We don't know yet whether these elements will play a major role in the show, but they will likely contribute to the series' larger world-building.
Lastly, an important thing to note is that Geralt of Rivia, well before the muscled guy who played Superman was cast in the role, has always been a ladies man. The Witcher 3 is a horny game, such that Tub Geralt is a thing, and that Hissrich promised fans earlier this year: "There is a bathtub this season. There is a bathtub," she told io9. Sure enough, Tub Geralt appeared in the series' final trailer.