Entertainment services, namely, providing online prediction markets for entertainment purposes through which users make predictions concerning real-world events and virtual-token exchange rates, take and trade positions, submit and manage orders, and exchange platform-based virtual tokens within the entertainment platform; providing online arcade games; providing online entertainment information relating to prediction markets, crowd-sourced probabilities, market prices, trading volume, market histories, market outcomes, and participant performance; providing online rankings and leaderboards relating to participant performance in prediction markets; providing online entertainment information relating to prediction markets and prediction-market data via a website and application programming interface