In all games, Coin Heaven is secretly located in the sky in several levels, accessed through a hidden item. It is loaded with coins, which the player may or may not have the ability to completely collect, and puts the player back into the main level after completion.
In Super Mario Bros., Coin Heaven can be accessed when the player hits a block that holds a Vine, which upon climbing up leads the player into the area. The player then must ride along a moving cloud in order to reach all the coins before being dumped back onto the ground.
Coin Heaven is accessed differently in Super Mario Bros. 3. If the player finds an invisible pink Note Block, the player can jump on it, sending them into Coin Heaven. In this version of Coin Heaven, the game will automatically side-scroll the player through and give him a chance to collect all the coins before reaching the pipe at the end, which will send him back to the ground. If Mario is equipped with either the Super Leaf or the Tanooki Suit, he could sometimes fly upward and find a Brick Block with a 1-Up Mushroom inside. However, he must be careful: since it's auto-scrolling, going to the left of it can crush him.
In Super Mario World, in addition to beanstalks and pipes, Yoshi's Wings can be used to get to a version of Coin Heaven. These require a Yoshi, though. As in Super Mario Bros. 3, the area autoscrolls. However, they don't have as many coins as is standard, though they do have five Dragon Coins to make up for it.
The New Super Mario Bros. series brings back beanstalks as the Coin Heaven access method. They vary wildly in layout this time, unlike in previous games. In New Super Mario Bros. 2, unlockable Rainbow Courses also appear for every world, should the last two digits of the timer match the world number upon clearing a course (with Worlds Mushroom, Flower, and Star treated as Worlds 7, 8, and 9, respectively).
In Super Mario 3D Land, many courses contain Coin Heavens, which contain a Star Medal at the end. They can be accessed by jumping on a rainbow colored Jump Block. The most common type scrolls sideways, with a single ? Block that contains a Super Star, which the player can use to defeat the five Biddybuds or Para-Biddybuds present and earn a 1-Up. The other type of Coin Heaven has many cloud platforms scrolling up and often starts out with coins arranged in the shape of "3D". An isometric camera view is used to trick players who do not turn on the Nintendo 3DS's 3D on.
Super Mario 3D World has Coin Heavens accessed via Cloud Cannons. They always have Green Stars at the end, like with Star Medals in 3D Land, and they're always side-scrolling. These areas have eight enemies rather than five, and have either a ? Block with a Super Star or a Potted Piranha Plant that can be used to take out enemies.