Overlay an image onto a single side of a cube?

The effect I’m working on is a game played on a table. Close analogy would be a ping pong table, where you’ve got the “playing field” painted on top of the table.

In a similar vein, my effect currently has a textured cube that’s been scaled into a rectangle. I have an image with my game’s “playing field” that I want to overlay on the top side of the cube. So essentially 5 sides of my cube object have the same texture, whereas the 6th side has a custom image overlaid onto it. What I’m basically trying to do is take my picture of the layout of a ping pong table, and have it be the texture for a single side of the cube (really a rectangle), so that the playing field is visible on top to users.

Is this possible? As far as I can tell it’s just one texture per object, so any other workarounds that might make this feasible?