The phrase represents the action of acquiring, at no cost, a particular strategy game published by IGG, where the objective is to defend a base or territory (“hidden valley”) using defensive structures. This search query indicates a user’s intention to obtain the game without payment, specifically identifying the developer or publisher as IGG.
Historically, the appeal of obtaining software, including games, without cost has driven a significant portion of online activity. The availability of free games lowers the barrier to entry, allowing a wider audience to experience the product. For developers, offering free versions can serve as a marketing strategy to attract users to premium versions or other paid content within the game.