Friday Night Funkin Pico Vs Darnell is a free online rhythm game available at fnf.gosprunki.net. This project is labeled as “Friday Night Funkin' WEEK 8 TEASER (Tomi-Vi's Fix)” – a fan-made expansion featuring Pico battling Darnell. The game is originally by @cabalex and currently runs on version v25v4b.
Default controls use WASD or arrow keys, fully configurable in the options menu. The gameplay follows classic DDR-style rhythm: “press arrow when arrow over other arrow. And uhhh don't die.” Keep the beat to out-rap your opponent and survive the song.
For players interested in creating custom content, the official modding guide is available at https://cabalex.github.io/fnf-song-converter/guide/. Use the song converter to add your own charts and music.