The game was designed and programmed by David Theurer for Atari using color vector graphics and is composed by different levels, each of which is identified by a geometric shape that develops prospectively towards the center of the screen from which come several enemies similar to spiders or insects. The player controls an unidentified being that can move on the edge of the geometric shape by a spinner and can shoot towards the center preventing enemies from coming back. A smart bomb has available for each level that destroys everything on the geometric shape and a second soft bomb that destroys only the beings on the edge on which the player moves. The game consists of 15 different levels (geometric shapes, actually). At the end of the fifteenth the game starts again with more difficulties or more enemies.

The cabinet in the collection is the original Atari version. Marquee and Control panel overlays have been reproduced. Aesthetically it is in very good condition. The spinner has a noticeable inertia that greatly increases the playability and the pleasantness of the movement.