Legends of the Three Kingdoms (simplified Chinese: 三国杀; traditional Chinese: 三國殺; literally Three Kingdoms Kill), or sometimes Sanguosha, LTK for short, is a Chinese card game based on the Three Kingdoms period of China and the semi-fictional 14th century novel Romance of the Three Kingdoms (ROTK) by Luo Guanzhong. The rules of the basic LTK are almost identical to the rules of the older Italian card game Bang!. LTK was released by YOKA games (游卡桌游) on January 1, 2008, and has been followed to date by a total of seven official expansion sets, an online version LTK Online, as well as a children's version LTK Q Version. There are self-created cards by players, but these are mostly unofficial.

LTK initially began with a strong following in China since the entire game is in Chinese. Sales of LTK totaled 20 million yuan in 2009, and 100 million yuan in 2010. However the game has begun to reach an international audience after players began translating the game into the English language and posting these translations on blogs and forums. Site visit statistics from one of these blogs showed that readers outside of Mainland China come primarily from Hong Kong, Taiwan, Singapore, the United States of America, Canada, Australia, United Kingdom, Malaysia, and New Zealand.

The cards and characters of LTK are all related to the ancient history of China, the most telling of which are the characters and their abilities. Each character is given an ability in the game which usually mirrors the historical character's personality, actions, strength/weakness, cause of death, and historical events in which the character was involved, etc. For example, Liu Bei's ability Kindness (仁德) allows him to give away his cards to other players, mirroring the benevolent and kind nature of Liu Bei in ROTK. Cao Cao, on the other hand, is given the ability Treachery (奸雄), which allows him to keep any card which causes him damage. This mirrors Cao Cao's style of coaxing able advisers of his enemies to defect and join him, then utilizing them for his cause.

The relevance of these abilities to ROTK and the Three Kingdoms history is interesting enough to inspire players to discover more about ROTK and Three Kingdoms history for themselves. One blog author describes his knowledge of Three Kingdoms evolving from uninterested to semi-expert after immersing in the study of LTK abilities. In August 2012, UC Berkeley offered a course in LTK. The faculty sponsor of the course, Professor Robert Berring, wants to get undergrads "acquainted with essential philosophy dating back to China's ancient dynasties".

The standard mode of LTK can be played by 2 to 10 people. Each player plays one of these four roles: Monarch (主公), Minister (忠臣), Rebel (反贼) and Traitors (内奸). There can be only one monarch in the game at all times, but the number of ministers, rebels and traitors are determined by the total number of players, as shown in the table on the right. Each player may have 3 or 4 Health points (see below), depending on their character.

Different roles have different victory conditions:

The game ends immediately if:

As long as one of the scenarios listed above occur at the endgame, the associated roles can claim victory even if the character has already been killed. In general, the Monarch and his ministers must work together to kill the rebels and traitors, while the rebels can cooperate to kill off the ministers before attacking the Monarch. Meanwhile, the traitor(s) can pretend to be ministers and help to kill the rebels, before revolting against the real ministers and finally confronting the Monarch.