Bayan mutuwar Jayavarman VII, dansa Indravarman II (ya yi sarauta 1219-1243) ya hau kan karagar mulki.Jayavarman na VIII yana daya daga cikin fitattun sarakunan daular Khmer.Kamar mahaifinsa, shi ɗan Buddha ne, kuma ya kammala jerin haikali da aka fara a ƙarƙashin mulkin mahaifinsa.A matsayinsa na jarumi bai samu nasara ba.A cikin 1220, a ƙarƙashin matsin lamba daga Dai Viet da ke da ƙarfi da ƙawancensa Champa, Khmer ya janye daga yawancin lardunan da aka ci a baya daga Chams.Jayavarman na VIII ne ya gaje Indravarman II (mai sarauta 1243-1295).Ya bambanta da magabatansa, Jayavarman na VIII ya kasance mabiyin Hindu Shaivism kuma mai adawa da addinin Buddah , ya lalata mutum-mutumin Buddha da yawa a cikin daular tare da canza haikalin Buddha zuwa haikalin Hindu.^[49] Kambuja ya fuskanci barazana daga waje a cikin 1283daular Yuan karkashin jagorancin Mongol.^{[] [50]} Jayavarman VIII ya kauce wa yaki da Janar Sogetu, gwamnan Guangzhou na kasar Sin, ta hanyar ba da kyauta ga Mongols, tun daga shekara ta 1285. Srindravarman (ya yi sarauta 1295-1309).Sabon sarkin ya kasance mai bin addinin Buddah na Theravada, makarantar addinin Buddah da ta isa kudu maso gabashin Asiya daga Sri Lanka kuma daga baya ta yadu a yawancin yankin.A cikin watan Agustan shekarar 1296, jami'in diflomasiyyar kasar Sin Zhou Daguan ya isa Angkor inda ya rubuta cewa, "A yakin da aka yi da Siamese na baya-bayan nan, kasar ta lalace matuka."^[52]