mocm writes "Starting on April 1st (no joke) most Linux Games in Germany are on the restricted list (no public advertising, no display, must be 18 or older to buy). That's because the new law requires an age certificate. Applying for the certificate requires a fee, which would be to much for the small publishers. There is a story in German at Linux Magazin and a statement by the online store Ixsoft, who even applied for a certificate for the game Uplink and have a list of restricted games." So it's not just Command & Conquer.