We've had a lot of fun with this app around the office, it's a trivia game you play one-on-one against a friend or a random person. Free to install and use, $2 if you want to play more than 4 games at once or get detailed statistics on your progress. Check it out! If you want to play against me, username is Jroc99.
https://itunes.apple.com/us/ap...ect/id563287626?mt=8
https://play.google.com/store/....intellect&hl=en
Disclaimer: I am in no way associated with the makers of this app and I get nothing from you installing or using it.