FNF Hazy River Vs. Garcello & Annie is a mod of Friday Night Funkin' game. In this mod, Garcello and Annie teamed up against Boyfriend.
You along with the main character need to help him beat them on a fairly long list of songs like Headache, Nerves, Release, Fading and Good Enough.
The control keys of this game are as follows:
Use the arrow keys to synchronize with what is displayed on the screen. Press the Spacebar key to beat the beat to the music. Press the arrow keys and Spacebar at the same time to beat the music and hit the opponent.