Literature in Thailand was traditionally heavily influenced by Indian culture. Thailand's national epic is a version of the Ramayana called the Ramakien. A number of versions of the epic were lost in the destruction of Ayutthaya in 1767. Three versions currently exist: one of these was prepared under the supervision (and partly written by) King Rama I. His son, Rama II, rewrote some parts for khon drama. The main differences from the original are an extended role for the monkey god Hanuman and the addition of a happy ending.
The most important poet in Thai literature was Sunthorn Phu, who is best known for his romantic adventure story Phra Aphai Mani and nine travel pieces called Nirats.
Kings Rama V and Rama VI were also writers, mainly of non-fiction works as part of their programme to combine Western knowledge with traditional Thai culture.
20th century Thai writers have tended to produce light fiction rather than literature, but the Isan region has produced two notably sociocritical writers in Kamsing Srinok and Pira Sudham.