Friday Night Funkin' is an open-source donation ware rhythm game. Developed by a team of four Newgrounds users, the game has a play style that is similar to Dance Dance Revolution and PaRappa the Rapper, with an aesthetic reminiscent of Flash games popular in the early-to-mid 2000s.
The game revolves around the player character, simply named "Boyfriend", who has to defeat a variety of characters in singing and rapping contests for him to be able to date his love interest, "Girlfriend". Gameplay revolves around mimicking the opponent's notes with timed inputs and trying to not run out of health for the duration of the song.
The game was initially created for the Ludum Dare 47 in October 2020. Later on, it garnered widespread popularity and became one of the most popular games on Newgrounds, as well as achieving a following online. A full version backed on Kickstarter is planned for release.