Klonoa: Moonlight Museum

Klonoa: Moonlight Museum (風のクロノア ムーンライトミュージアム, Kaze no Kuronoa Mūnraito Myūjiamu) is a video game developed by Namco and published by Bandai, released in Japan for the WonderSwan in 1999. It is the first handheld game in the Klonoa series to place him in a fully two dimensional world, and established the system that the Game Boy Advance titles later used.

The player controls Klonoa as he runs, jumps, and fights his way across several worlds, solving small puzzles in the process. The game itself is divided into five worlds, each of which is split into six stages called "visions". At the end of each stage, Klonoa must find a door which is unlocked by finding all 3 stars within the vision itself. There are also 30 crystals (or "dream stones") in each vision, collecting all these to finish the part of the picture shown at the end of the vision (one picture per world). In addition, Klonoa can also find hearts that can replenish his health, as well as 1 up items that look like Klonoa's hat.

Klonoa: Moonlight Museum stars Klonoa and his friend Huepow as they come across a young crying girl who tells them that the moon has been divided into fragments and stolen by a mysterious group of artists that reside in the nearby Moonlight Museum. Determined to help, the duo rush off to the Museum's entrance, and once they come inside, they are greeted by a painter named Picoo who traps them inside a piece of artwork. Klonoa and Huepow must fight their way through five worlds within the Museum itself before finding the source of all their troubles and restoring the moon to the sky.

Moonlight Museum was announced a month before its release in April 1999 as a side story to the original Klonoa: Door to Phantomile for the PlayStation. The game was in development simultaneously with Klonoa 2: Lunatea's Veil for the PlayStation 2, with the production of both games headed by Hideo Yoshizawa. While the Klonoa 2 team focused more on "action", Moonlight Museums crew was instructed to focus on the "puzzle" aspect, a trend that would continue for subsequent handheld games in the series.

Klonoa: Moonlight Museum entered the Japanese sales charts as the 10th best selling game during its debut week. In a review of an import version in 2000, IGN called the title "a WonderSwan platformer that's cute, cuddly and painfully average" finding the level design to be "decent (if not a little dull)" and visuals that didn't push the limits of the handheld. The website remarked that the title could be played equally well on the WonderSwan's horizontal or vertical display modes, and the audio was "decidedly above average" despite limited background music.