Jan 22 (Reuters) - Shares in Ubisoft plunged on Thursday after the French video game publisher announced a sweeping reorganisation and said it would cancel six games. Shares of the "Assassin's Creed" video game series creator dropped nearly 30% in a delayed start to trading, leading losses on the SBF 120 index of Paris' most traded stocks. (Reporting by Gianluca Lo Nostro and Clement Martinot in Gdansk; Editing by Milla Nissi-Prussak) (The article has been published through a syndicated feed. Except for the headline, the content has been published verbatim. Liability lies with original publisher.)