If Europeans are irked by the Wii U's odd time-based shopping rules for mature content, they'll at least have Windows 8 as their refuge. As of today, Microsoft is accepting Windows Store submissions for PEGI 18-rated games: the move will let Grand Theft Auto IV, The Witcher and future adult-focused titles come to Windows' official shop in countries where PEGI holds sway. European players undoubtedly reap short-term