Alexa, open Trivia Battle
This is one of my favorite Alexa skills for kids and playing together as a team. This trivia game is also so fun because you are competing head-to-head with another random person in real time. Don't worry, you have zero communication with that opponent while Alexa moderates.
It'll ask you the same set of trivia questions (e.g., geography, outer space, history, etc.). With only a few seconds to respond, you'll earn points with every correct answer said! You're earning extra points for your overall team, too (the U.S. state you reside in).