Kirby's Adventure, known as Hoshi no Kirby: Yume no Izumi no Monogatari (星のカービィ 夢の泉の物語, Hoshi no Kābī: Yume no Izumi no Monogatari, lit. "Kirby of the Stars: The Story of the Fountain of Dreams") in Japan, is a platforming video game developed by HAL Laboratory and published by Nintendo for the Nintendo Entertainment System video game console. It was first released March 23, 1993 in Japan, and was later released in North America on May 1, 1993, and in Europe on December 1, 1993. Kirby's Adventure was the second and last game to use Kirby's original design, albeit in color (the first to use the design was Kirby's Dream Land) and is the first game in the series for Kirby to gain his trademark colors (as the first game to feature him was in black and white).

Kirby's Adventure is the only Nintendo Entertainment System Kirby video game, and is the second game in the Kirby series, following his debut on the Game Boy in Kirby's Dream Land. It is also the first Kirby game on a home console, to be in color, and to have a save feature. It also features the first appearance of the popular character Meta Knight. A remake of the game for the Game Boy Advance, titled Kirby: Nightmare in Dream Land, was released in 2002.

The original version has been released on the Virtual Console in North America on February 12, 2007, in Europe on February 16, 2007, and in Japan on February 27, 2007. It was also one of the 12 "Masterpieces" (demos of famous Nintendo games) provided in Super Smash Bros. Brawl. A 3D Classics version was released for the Nintendo 3DS eShop in November 2011.

Like the majority of Kirby video games, Kirby's Adventure is a platformer. The game consists of seven worlds, each containing a set of regular levels, a boss fight, and a Warp Star door (which enables Kirby to travel from world to world). Most worlds also contain mini-games (which allow Kirby to gain extra lives), museums (which allow Kirby to gain certain powers), and/or Arenas (where Kirby must battle with a mini-boss to win health items and allow him to copy the boss' special ability afterwards). The game was the first in the series to include a save feature. It automatically saves the player's progress after each level.

The objective of each main level is simply to reach the end of the level. If Kirby touches an enemy or a dangerous object, he takes a point of damage, and if all of his hit points are lost or he falls off the bottom of the screen, the player loses a life. Kirby can touch or eat food items to immediately replenish health or gain temporary invulnerability.

Kirby can walk, run, jump, and he can attack and dodge enemies by slide-tackling. He can also fly by inflating himself, and is able to reach any height that isn't blocked by an obstacle. While flying, Kirby cannot use his other abilities, but he can exhale at any time, releasing a puff of air that can be used to damage enemies or destroy blocks.

Kirby's main ability allows him to inhale indefinitely, sucking nearby enemies and objects into his mouth. Once inhaled, objects remain in his mouth until he either spits them out (dealing damage to enemies and objects in front of him) or swallows them. Upon swallowing certain enemies, Kirby immediately "copies" any special abilities that the enemy possesses, giving him access to a wide variety of powers, some of which may be needed to solve various puzzles. Usually, Kirby cannot inhale anything while he has use of a special ability, but he can "drop" the ability at any time (this happens automatically whenever he takes damage), sending it bouncing behind him as a star for a short time. Kirby can regain the ability by inhaling and swallowing the star before it disappears.