Silat is a collective word for a class of indigenous martial arts from a geo-cultural area of Southeast Asia encompassing most of the Nusantara, the Indonesian Archipelago, the Malay Archipelago and the entirety of the Malay Peninsula. Originally developed in what are now Indonesia, peninsular Malaysia, south Thailand, and Singapore, it is also traditionally practised in Brunei, Vietnam and the southern Philippines. There are hundreds of different styles (aliran) and schools (perguruan) but they tend to focus either on strikes, joint manipulation, throws, bladed weaponry, or some combination thereof. Silat is one of the sports included in the Southeast Asian Games and other region-wide competitions. Training halls are overseen by separate national organisations in each of the main countries the art is practised. These are Ikatan Pencak Silat Indonesia (IPSI) from Indonesia, Persekutuan Silat Kebangsaan Malaysia (PESAKA) from Malaysia, Persekutuan Silat Brunei Darussalam (PERSIB) from Brunei and Persekutuan Silat Singapura (PERSISI) from Singapore. Practitioners are called pesilat.