In this special Monster Quest Halloween themed spin-off of Monsters vs Fractions, a zombified Dr. Chaos shows up in his haunted lab with lots of Halloween-themed surprises as a team of monsters and robots works to capture him! This Halloween experience lets players explore a digital haunted house just for fun. Monsters vs Fractions 4: Haunted Havoc is the “math” version of this game and is also out as part of the Monsters vs Fractions series.