A backdrop will at most times prepare you psychologically to enjoy the play in a theatre hall. Therefore it is designed in a way to attract viewers and make it feel part of the film only by preparing their minds with a well-designed hanging behind the hall.
If you want to have a backdrop on your stage, then you have two options; To make your own or just to rent your own. Rent one cheaper than making your own. Expensive to have one and it's hard to maintain the same thing.
It is possible to have your own backdrop just ensure that you have all the necessary items and time to devote into the effort. The required material may be quite expensive and not easy to find.
The backdrop makes the game look impressive and attractive to viewers. This brings those involved in the game to people. If you have two different occasions, you don't need to have two different backdrops because you can still use that you have. The backdrop is not only limited to playing, they can be used for other events too.
If you want to get your audience glued to your game or presentation, then you need to do your homework well. People will choose to go where the theme is projected well in the background. You will not miss their excitement as soon as they find interesting ones.