Revision 11

Map Size and Setting

The open world is set in Kovir and Poviss, a northern kingdom in the Witcher universe. CDPR has stated the map is "more or less the same size" as the prior installment's world; in The Witcher 3: Wild Hunt, that world measured roughly 142 square kilometers. CDPR clarified it could be "90, 85, or 100 percent" of that size. Not identical, but in the same ballpark.

The world is bounded by natural borders:

• The Dragon Mountains to the north

• The sea (North Sea / Gulf of Praxeda) along the southern coast

• The kingdom of Redania to the southwest

• Creyden to the west

Confirmed Locations

NPC Behavior

The world reacts to Ciri's actions in granular ways. Bump into a townsfolk and they react. Knock over a crate of apples and a chain reaction can unfold. These are not scripted events; they are physics-driven interactions with systemic NPC responses.

The State of Unreal 2025 tech demo showed up to 300 individually unique NPCs in a single scene. Each had distinct appearance, clothing, and behavior. Sebastian Kalemba stated: "We have this rule to make every single NPC looking like they're living, with their own story."

Kelpie

Ciri's horse is Kelpie, a black mare from Sapkowski's novels. This is Kelpie's first appearance in any Witcher game (Geralt rode Roach in previous entries). The name comes from a Scottish water spirit, which Sapkowski used as an in-world name.

Technical details from the tech demo:

• Seamless mounting from any angle (no fixed mount point)

• Realistic muscle simulation via ML Deformer (muscles flex and shift under the skin during movement)

• Full integration with the Unreal Animation Framework for smooth transitions between gaits

Roach, Geralt's horse in The Witcher 3, became an unintentional comedy icon because of her tendency to spawn on rooftops and get stuck on geometry. CDPR appears to be investing heavily in making Kelpie more polished.

Density Over Raw Size

The decision to keep the map at roughly the same size as the previous Witcher game's world rather than making it larger is telling. Open-world games have trended toward ever-bigger maps, but the common criticism is that bigger maps often mean more empty space. CDPR seems to be prioritizing density: more NPCs per location, more reactive systems, more things to do per square kilometer.

This philosophy mirrors Philipp Weber's quest design approach: no filler, no fetch quests, every piece of content worth the player's time.

New Movement Abilities

The Witcher IV introduces two movement features absent from previous Witcher games: a dedicated jump button and underwater swimming.

The jump button allows Ciri to leap freely during exploration. In the previous Witcher games, free jumping was not available; Geralt could only vault over specific obstacles. The dedicated jump was confirmed in the March 2026 AnsweRED Podcast.

Underwater swimming has also been confirmed. In the previous Witcher game, Geralt could swim on the surface and dive only via a crossbow-triggered mechanic. The Witcher IV will offer a fuller underwater exploration experience, with Ciri able to dive freely and stay submerged. Details on underwater combat or maximum dive duration have not been revealed.

NPC Variety and Crowd Technology

CDPR has implemented a Mass AI crowd scaling system for populated areas like Valdrest and Lan Exeter. The State of Unreal 2025 tech demo showcased crowds in Valdrest's market district with individual NPCs performing contextual animations. The March 2026 AnsweRED Podcast confirmed that CDPR is investing heavily in NPC variety to ensure towns feel distinct and populated. MetaHuman technology is used to bring NPC visual quality closer to protagonist-level fidelity.

The same March 2026 AnsweRED Podcast episode confirmed that Ciri can cast Witcher Signs and Source magic while walking or running, whereas in the previous Witcher games the protagonist had to stop moving to cast. The development team has also added more than 80 distinct base-movement animations for Ciri to make traversal feel less stiff.