CD Projekt also confirmed to IGN that The Witcher 4 is a single-player game. Here's the official blurb from CD Projekt: The Witcher IV is a single-player, open-world RPG from CD Projekt Red.

First appearing in the mid-90s, the ESP (Electronic Skip Protection or Electronic Shock Protection) button enabled a data buffering feature on portable CD players to help prevent audio playback ...

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