Batman Unlimited: Monster Mayhem

It's Halloween night in Gotham City and Scarecrow, Clayface, Silver Banshee and Solomon Grundy are hitting the streets looking for trouble. Batman is on the trail of the city's fearsome villains as things get complicated and the Clown Prince of Crime himself, The Joker rules his mysterious gang of criminals. It's up to the Dark Knight to stop this massive gang before they can unleash "digital laughter," a computer virus that is part of a diabolical plan to put all of the city's vital technology in check. Batman, Green Arrow, Cyborg, Nightwing and Red Robin must combine all their forces to fight these evildoers and save the city.