15 minutes of gameplay at most and at least 15 combinations to complete the story. Every choice has its consequences, do what you want and never regret it.
Put the unzipped folder in the location: User\Documents\Witcher2\UserContent. Be aware of possible main folder duplicates. Known issues: -peasants don't react when player enters combat mode. -npcs don't have their names displayed properly (nekkers can be named "King Kong").