Chill

"Chill" is a musical theme composed by Hirokazu Tanaka for the 1990 game Dr. Mario. It has since made an appearance in every Dr. Mario game to date (not counting the Gamewatch Boy version). In the original Dr. Mario, it is one of the two selectable themes, with the other being "Fever." Compared to "Fever," "Chill" is less upbeat and more slow-paced.

Reuses
The following list does not include ports and remakes of Dr. Mario.

Dr. Mario (Game Boy)
In the Game Boy version of Dr. Mario features an arrangement of "Chill" with slightly lower-quality synthesized instrumentation.

Tetris & Dr. Mario
In Tetris & Dr. Mario, "Chill" receives a new arrangement with quirky instrumentation.

Dr Mario 64
In Dr. Mario 64, a new arrangement of "Chill" can play in all modes except for in the Story mode. This arrangement is reused in Nintendo Puzzle Collection.

Dr. Mario & Puzzle League
A new arrangement of "Chill" is included in Dr. Mario & Puzzle League.

Dr. Mario Online Rx
Dr. Mario Online Rx features two new arrangements of "Chill". The first is reminiscent of the version from Dr Mario 64 and can be played in the Dr. Mario mode, while the second is less faithful to the original, featuring a longer build-up and different melodic rhythm with quirky instrumentation, and can be played during the Virus Buster mode.

The first arrangement is later reused in Dr. Mario Express, Dr. Luigi, and Dr. Mario: Miracle Cure.

Dr. Mario World
Dr. Mario World features a new arrangement of "Chill" that plays on the stage mode's challenge stages.

WarioWare, Inc.: Mega Microgame$!
An arrangement of "Chill" is used for the minigame Dr. Wario, a Dr. Mario imitation in WarioWare, Inc.: Mega Microgame$!. In this version, the bassline from the original piece is brought to the front with different instrumentation, and the percussion is now drums, while the primary track of the intro is much more subdued. The main melody is similar to the original in instrumentation, albeit slightly lower in pitch.

Super Smash Bros. Brawl
Super Smash Bros. Brawl features a new arrangement of "Chill" titled "Chill (Dr. Mario)" and arranged by Masaaki Iwasaki. The arrangement includes and  elements, as well as a -based section and vocal. It can be played on the Flat Zone 2 stage.

The arrangement returns in Super Smash Bros. for Wii U, where it can be played on the Flat Zone X stage, and Super Smash Bros. Ultimate, now titled "Chill (Brawl) ", where it can be played on any Super Smash Bros.-series and Super Mario-series stage.

Super Smash Bros. for Wii U
Super Smash Bros. for Wii U features a new arrangement of "Chill" titled "Chill (Dr. Mario) Ver. 2" and arranged by the theme's original composer, Hirokazu Tanaka. It is a and -inspired arrangement that incorporates the "Game Over" sound effect. It can be played on the 75m stage.

The arrangement returns in Super Smash Bros. Ultimate, now titled "Chill (for 3DS / Wii U) ", where it can be played on any Super Smash Bros.-series and Super Mario-series stage.

The Super Mario Bros. Movie
In The Super Mario Bros. Movie, a brief arrangement of "Chill" can be heard in the track "Fighting Tooth and Veil" when Mario flies up to Bowser's ship with the Tanooki Suit.

Brain Age 2: More Training in Minutes a Day!
A much calmer and slower-paced arrangement of "Chill" plays in the hidden Virus Buster minigame in 

According to the game's host,, the music is intended to enhance the relaxation aspect of the minigame.

This arrangement returns in the Virus Buster mode in Dr. Luigi and Dr. Mario: Miracle Cure.

Dr Kawashima's Brain Training for Nintendo Switch
An arrangement of "Chill" very similar to the version heard in Brain Age 2: More Training in Minutes a Day! plays in the Virus Buster minigame in .