CD Projekt RED has announced that start of the open beta test for The Witcher: DuelMail, a completely free-of-charge web-browser game based on The Witcher. The game centers around battles between two players using one of the three completely different character classes. You'll gain experience as you continue to win and this allows you to advance to higher levels of character development, along with gaining new skills and items to use in your battles. The game requires only a PC with an internet connection and a web browser with Flash installed. The Witcher: DuelMail will be released on May 9th.