You can play any competitive game where players compete head-to-head and there's a clear winner and loser:
Console Games: FIFA, Call of Duty, Street Fighter, Tekken, Mortal Kombat
PC Games: Counter-Strike, League of Legends, Dota 2, StarCraft, Chess.com
Mobile Games: Clash Royale, Brawl Stars, PUBG Mobile, Mobile Legends
Physical Board Games: Chess, Backgammon, Checkers, Othello, Connect Four
Physical Card Games: Poker, Magic: The Gathering, Yu-Gi-Oh, Hearthstone
Physical Sports: Basketball, Football, Tennis, Table Tennis, Badminton
Physical Strategy Games: Risk, Stratego, Battleship
Important: All games must be competitive - 2 players or teams compete, one wins, one loses!