Sevanna took the small gray cube from her pouch and placed it atop the brown leaves in the middle of the circle.

On the other side, the Forum's four main meeting halls occupy a graduated row of gray concrete cubes.

With nothing but three grey cubes and a controllable camera, the shape of the game is already recognizable.

Schwarz reached into his webbing and produced a small gray cube of C-4 plastic explosive.

He pointed to a large gray cube in a corner of the room.

Bare, ugly, and ominous, it formed a gray cube jutting up from the level ground.

Around him was a matrix of the gray cubes arranged hi painfully perfect geometric design, all joined by gleaming metal tubes.

It was a simple, massive cube, all grey, with no markings or decorations I could distinguish.

Leaning closer, he ran his light over the array of electronics perched atop a nest of tiny gray cubes.