A law prohibiting what parents can and can't buy is plain ridiculous. To be perfectly honest, there's nothing all that bad in a videogame. I doubt anywhere in Amuricah a store would refuse to sell a Bible to a kid.
There are wars, absolute massacres, rapes, sex, whores, violence, religious intolerance escalating into bloodshed and outright war, all in the Bible, yet that's never been banned or restricted in my country.
So really, I think video games get annoying restrictions, laws, and parents clamoring for banning because they're newer, plain and simple. Happened with rock n' roll, happened with heavy metal, happened with movies, now it's games.