Friday Night Funkin' (Cascadiaverse)

Friday Night Funkin (stylized as FRIDAY NIGHT FUNKIN' and often abbreviated to FNF) is a Cascadian-American open-source donationware rhythm game first released in 2020 for a game jam. The game was developed by a team of four Newgrounds users, Cameron "ninjamuffin99" Taylor, David "PhantomArcade" Brown, Isaac "Kawai Sprite" Garcia, and evilsk8r. The game shares some gameplay features with Dance Dance Revolution and PaRappa the Rapper and borrows aesthetic influences from Flash games. The game has been credited with driving users back to Newgrounds, a site whose popularity peaked in the early 2000s.

The game is most popular in Indonesia, the country the game first gained popularity in, in January 2021.