Since I have a sick and twisted mind, I'm wondering how far we can go before having trouble with "not-nice-things" in games ?
- Have an extremely racist main character ?
- Play a terrorist that try to drop a bomb in a public place (with score based on victims number) ?
- Play a kid doing a bloodbath in it's school ?
- Show naked children ? (not in a sexual context)
- A torture&murder simulation game ? with rape ?
and if we overstep the line, is there any risk beyond interdiction to sell in some countries (which would be a nice advertising^^) ?
It depends on where you live, in some countries(even democratic ones) freedom of speech/expression is restricted and you can actually get fined or even jailed if you go too far, normally you don't have to worry about the laws of other countries unless you plan on selling your game there.
Edit: Since you're from france, no its not the same in most european countries, it actually varies quite alot between them. Especially when it comes to things like hate speech, or portraying certain historical events.
from wikipedia (This part applies to france):
LAW No 90-615 to repress acts of racism, anti-semitism and xenophobia (1990)
MODIFICATIONS OF THE LAW OF JULY 29, 1881 ON THE FREEDOM OF THE PRESS Art 8. - Article 24 of the Law on the Freedom of the Press of 29 July 1881 is supplemented by the following provisions: In the event of judgment for one of the facts envisaged by the preceding subparagraph, the court will be able moreover to order: Except when the responsibility for the author of the infringement is retained on the base for article 42 and the first subparagraph for article 43 for this law or the first three subparagraphs for article 93-3 for the law No 82-652 for July 29, 1982 on the audio-visual communication, the deprivation of the rights enumerated to the 2o and 3o of article 42 of the penal code for imprisonment of five years maximum;
Art 9. – As an amendment to Article 24 of the law of July 29, 1881 on the freedom of the press, article 24 (a) is as follows written: <<Art. 24 (a). - those who have disputed the existence of one or more crimes against humanity such as they are defined by Article 6 of the statute of the international tribunal military annexed in the agreement of London of August 8, 1945 and which were a carried out either by the members of an organization declared criminal pursuant to Article 9 of the aforementioned statute, or by a person found guilty such crimes by a French or international jurisdiction shall be punished by one month to one years imprisonment or a fine.
Art 13. - It is inserted, after article 48-1 of the law of July 29, 1881 on the freedom of the press, article 48-2 thus written: <<Art. 48-2. - publication or publicly expressed opinion encouraging those to whom it is addressed to pass a favourable moral judgment on one or more crimes against humanity and tending to justify these crimes (including collaboration) or vindicate their perpetrators shall be punished by one to five years imprisonment or a fine.