Well, i’l only talk for my country (France).
The only law that could pose a threat is : all character must be 18 years old or more.
That’s all.
If stated that the character is more than 18, so no problem.even with a Loli appearence, Guro, hardcore SM, violence, rape etc…
Now, the game will get an X-Rated rating.Which mean a tax of 30% on the price and can only be sold in sex shop (for box version).And, in some case, they’ll check if you have a record for sexual agression, pedophilia etc…
But you can bypass this tax and check by buying a download version of the game.(well if the website where you buy is outside of the European zone, you’ll get a little tax too).
Well the French Law is special.Since you can contest lhe way the law was interpreted itself if you want.You can even appeal to a special court (Conseil d’Ètat) because you think that some decision made by the gouvernement are against some law.
[edit]
In fact i’ll detail more, because their is a big difference between American law and French law in the way they work.
let’s take, for exemple, a murder case.
In America you’re accused of murder and the prupose of the trial is to know if you are innocent or guilty.
in France, you"re innocent but under the suspicion of murder and the purpose of the trial is to know if you’ve broken the law or not.If it’s proven that you broke the law and murdered someone, then you’re guilty if it’s not proven you remain innocent.
[edit]
I was thinking and then… Well, i found my explanation really bad.
So, let’s start again.
In USA you’re found guilty for the act of murder (for exemple) and thus you apply the sentence found in the law about murder.
In France youre found guilty of the act of breaking the law about murder thus you’re reponsable of this act and the law says you get this sentence.