FNF is a rhythm game in which players take on the role of Boyfriend, who must defeat a series of opponents in rap fights to win the attention of his girlfriend. The gameplay consists on hitting notes in time with the music, with each opponent giving a unique challenge and musical style. The basic yet fascinating mechanics make it easy to learn but tough to master, resulting in a rewarding learning curve for players of all skill levels.

What distinguishes FNF is its particular visual style, which is evocative of early 2000s Flash animations. The characters are expressive and full of personality, and the backdrops are frequently colorful and vibrant, which adds to the game's overall appeal. This distinct style, paired with a broad music covering genres such as hip-hop, R&B, and electronic, results in an immersive and engaging experience.