Is it permissible to work in designing simulated marital games, and what should be done about agreed-upon and already commenced work?

A ruling on something is a branch of its conception, and a mufti (issuer of fatwa) cannot track all games. So, if games are free of Sharia-prohibited elements, they are permissible; otherwise, they are forbidden. Knowing the Sharia ruling does not require the mufti to apply the ruling directly to the specific thing asked about. Rather, the important thing is to clarify the Sharia principles (manatat) related to the issue, and it is up to the questioner himself, or someone familiar with the game, to apply these principles.

Ibn Taymiyyah clarified that knowledge of what is known and unknown in a sale is taken from experts, not from jurists. The jurist specializes in knowing rulings with their evidence, while experts are consulted for sensory matters.

Ibn Al-Qayyim emphasized that the statement "this is gharar (excessive uncertainty) or unknown" is not the purview of the jurist, but rather of experts. The jurist clarifies what Allah has permitted and forbidden, and refers to experts for sensory and customary matters, such as whether a description constitutes a defect or whether a sale is profitable.