- Game Library
10.10.2022 892 1 votes
In the new FNF Underswap mod Vs CrossBones you need to help BF defeat a new version of Sans, with these crossovers having always been received here extremely well, even more so when they have such amazing songs:
Whether you're playing in the story mode or free play mode, you win in the same way, by reaching the end of the songs, and to do that you need to hit your notes according to the charts until the end of the song.
So, when you see floating arrow symbols match above BF, press the identical arrow keys. Make sure not to miss hitting notes too many times in a row, you will lose and have to start again from scratch. Enjoy!
This is an open-source game, and you can support the developers here.
How to play?
Use the arrow keys.