20110070803 | MARBLE TRACK AMUSEMENT DEVICE - An entertainment device including a track for rolling marbles. The track may be configured onto at least one vertical or horizontal planar support surface, such as walls, tables, doors, floors, and vertically or horizontally oriented rod-like structures, such as the branches of a tree. In one embodiment, the three-dimensional track configurations may include at least one interconnected substantially vertical and substantially horizontal support surface. | 03-24-2011 |