After finding a mysterious key at the local toy shop, Donna senses that it belonged to a door in her basement. The door hid a mysterious game called, "Zathura" a game that is out of this world.

Not all games should be played.

[complete][Halloween Special] Shortly after the final battle with Yubel, Halloween comes to Duel Academia. Tyranno wants to play this cool game he found in the school basement with everyone at the spooky abandoned dorm, but Shou isn't certain that's a good idea. When the game turns dangerous, the group of friends will have to reforge bonds strained in Dark World to get home alive.

As the title says :)