The Tantibus.
Almost no-one knows its true purpose.
To torment.
To hurt.
To remind.
So what happens when such a thing escapes its confines? When a creature born on pain and Nightmares escapes into the Dreamscape?
Simple really, you play a game.
Princess Luna, Twilight Sparkle and Flare Blitz enter the Dreamscape and find themselves playing the Tantibus’ game. And they’re not the only ones.
A group of humans that use the Dreamscape as a game are caught up as well. Rez and his friends are about to play a game like none other.
Because, this Nightmare knows how to fight back...

This story is a crossover between stories written by Ausbrony and NiGHTcapD. It is written by both writers in direct collaboration with each other.

Recommended prereadings:
Ausbrony's A Pony out of Place and Flames and Twilight, up to (and beyond) the latter's Games Ponies Play
NiGHTcapD's Rez: Eqstr[Tera] up to WH4