FNF: Phantasm But Old And New GF Sings It

In this musical battle, two friends from the game Undertale have to fight a musical battle by singing the song Phantasm. The game is done in neon colors and creates an atmosphere of musical competition. Reaction rate and agility will help you win. You control the game with the arrow keys which you press when they are shown on the screen. Hitting the beat will bring you closer to victory. You must be really fast as it is not the simplest game - sometimes it is very hard to win.