Friday Night Funkin’ ( fnf) is an open-source rhythm game that first launched in 2020 and quickly became a phenomenon thanks to its simple yet captivating gameplay and unique art style that blends retro and internet memes. In the game, players take on the role of Boyfriend — a chibi-style cartoon character — and participate in dramatic "rap battles" against various opponents, from Daddy Dearest to community-created characters. The gameplay revolves around correctly pressing the seven arrow keys (WASD + arrow ↑ ← ↓ to match the musical notes displayed on the screen, to the lively rhythm of funk, EDM, hip-hop, or chiptune music. Each song is a battle lasting approximately 1–3 minutes, requiring quick reflexes, good rhythm, and high accuracy to achieve high scores and overcome the challenge. Thanks to its extensive modding system, FNF is not just a rhythm game, but also an open creative platform where the community constantly adds new songs, characters, and storylines—transforming the game into an endless, vibrant, and highly personalized musical performance stage.