Ragnarok Online Official Guide Book VOL. 10 (Korean: 라그나로크 공략집 10) is an official strategy guide for Ragnarok Online. Features Hugel and the new Taekwon classes. Includes a voucher for 10 free days of Ragnarok Online (when the game was pay-to-play). Measures 15 x 22.5 x 1.3 cm.