MASSIVE SPOILERS FOR THE GENOCIDE ENDING OF UNDERTALE. Press the up, down, left and right arrows to move your SOUL around. Press Z when the menu appears to select FIGHT, ACT, ITEM, or MERCY. When your HP drops to 0, the game is over. Press the green flag to restart the game. Avoid getting hit by Chara's knives and maybe you'll last long enough to SAVE the world you destroyed. There's also at least one dog.
UNDERTALE is property of Toby Fox. All sprites, sound, and some dialogue comes from the game UNDERTALE. Please play UNDERTALE before playing this mini boss fight.