There is an animation for a "Game Over" screen in Rhythm Heaven. Missing the coin simply resets the score without showing a "Game Over" however.
There are unused animations showing the hand with an open palm, to more easily catch the coin.
In Rhythm Heaven Megamix, all of the Endless Games have an unused description intended to be seen at the Museum. All of them except for Sick Beats are the same as that of the Saffron Trial. Coin Toss also has an unused title meant for the Endless version: Coin Toss: Endless (コイントス:エンドレス?, Koin Tosu: Endoresu).