The Media Development Authority of Singapore has decided to prevent Microsoft's forthcoming Xbox 360 title, Mass Effect, from being released in the country.
According to a report in the nation's broadsheet, The Straits Times, the decision has been taken due to the inclusion in the game of a "sex scene between a human woman and a female alien."
The report claims that the decision has "caused an outcry among local and international gamers, who said it was too strict a decision."
Singapore has previously banned other titles, including God of War 2 for nudity and The Darkness for excessive religious expletives.
Microsoft hadn't responded to a request for comment at the time of writing.