"Tonight Show Search Party" features Team Cyrus competing against the CW stars to name most popular Google searches.
Here's how the game worked: Fallon's sidekick, Steve Higgins, asked one member of each clan to guess one of the four most popular answers to questions people type into Google's search engine.
Although Cole Sprouse believed the game was rigged since Fallon was on the Cyrus team, "Riverdale" still ended up coming out on top.
"It's a little convenient that the house keeps winning. I'm just saying," Sprouse said in the middle of the game.
The game was another segment designed for Miley Week on "The Tonight Show." Other highlights included the singer surprising fans while they were sitting in her "The Voice" chair and a performance of "Week Without You" from her latest album "Younger Now."