Treble is a fantasy football (soccer) game built on Solana, centered on the 2026 FIFA World Cup. Players open digital packs to collect tradable player cards, build three-card lineups for real matches, choose a captain, and compete in free-to-enter and paid contests. Lineups are scored live from official match data — goals, assists, clean sheets and more — with card rarity and card-XP bonuses applied on top. Contest prize pools are paid out in USDC and $TREBLE. $TREBLE is the in-game token used for pack purchases, paid lineup actions, marketplace trades, and contest rewards.