gimmick
noun [ C ]
uk/ˈɡɪmɪk/ ussomething that is not serious or of real value, which is used to attract people's attention or interest:
The Senate opened debate on the balanced-budget amendment, with Democrats calling it a gimmick.
advertising/marketing/promotional gimmick Some Wall Street bankers say one-stop shopping is more of a marketing gimmick by the banks.
The fan-voting element is little more than a gimmick that helps the network distinguish its award show from others.