million, billion, trillion, zillion, jillion, gazillion (adj)

a very large indefinite number (usually hyperbole)

"there were millions of flies"

zillion (adj)

very large indeterminate number

"a zillion people were there"

zillion (Noun)

An unspecified large number (of).

Zillion

Zillion, known as Akai Koudan Zillion in Japan, is a space adventure platform video game designed for the Sega Master System as a companion for the Zillion anime in 1987. The game is a free-scrolling platform/adventure in the vein of Metroid. It also has objects to be inspected and the need to enable things by accessing codes, much like Impossible Mission. A sequel to the game, Zillion II: The Triformation was also released. Zillion prominently features Sega's egg-shaped mascot, Opa-opa, who stars in the Fantasy Zone games, also available for the Sega Master System.

zillion

Many languages have words expressing indefinite and fictitious numbers—inexact terms of indefinite size, used for comic effect, for exaggeration, as placeholder names, or when precision is unnecessary or undesirable. One technical term for such words is "non-numerical vague quantifier". Such words designed to indicate large quantities can be called "indefinite hyperbolic numerals".