This is part of a long series of Language Log posts in which we pondered the phenomenal memorization skills of persons of Indian heritage (see "Selected readings" below).

So you know what's happening in the following astonishing video, let me begin by giving a basic definition, etymology, and explication of what happens in this intricate word game:

Antakshari, also known as Antyakshari (अंताक्षरी transl. The game of the ending letter) is a spoken parlor game played in India. Each contestant sings the first verse of a song (often Classical Hindustani or Bollywood songs) that begins with the consonant of Hindi alphabet on which the previous contestant's song ended.

The word is derived from two Sanskrit words: antya (अन्त्य) meaning end + akshara (अक्षर) meaning letter of the alphabet. When these words are combined and an '-i' suffixed, the term means "The game of the ending letter". Due to schwa syncope in Hindi and other Indo-Aryan languages, Antyakshari is pronounced antakshri. A dialectical variation of the word is इन्ताक्षरी or intakshri.

Antakshari was originally present in the Ramayana, where rishis (sages) sang the first verses of bhajanas continuously by singing another Bhajana beginning with the last letter of the ending word.

Antya @Sskt: end, doorway is the end of the road
Antara@Mly via Sskt inter-
Endura/ndula @ Mbuti: interior, entry, under canopy