Level your cards as much as possible to have a greater chance to win games. After your star card, focus on your strongest card. After playing a couple games obtaining a few cards, modify your lineup. Choose the cards with the best stats as your starters, then level up my top card after your superstar with cards that were earned. Rotate your lineup often to keep the best cards in play. Win tournaments to get the chance to get rare cards as a reward. Only play the regular season games when you have extra energy. During tournaments, you have four rivals that you can play against. After challenging them, you will be allowed to see their cards. If they are very strong back out and challenge a different rival. Only challenge rivals you have a chance of defeating to avoid wasting energy. When you reach a point where you cannot win more tournament games because all opponents are too strong, replay previous single player matches and win them repeatedly for extra cards to level up your existing deck.
Clashes
When you have a player clash during a match, go for the sure win. You can view the stats of all players. Use the first one (besides your best card) that can beat your opponent. Save your best card for later use. However, if it looks like you will lose no matter what, choose your weakest card to increase your chance of winning future clashes.
Evolution
You can only evolve silver and better cards. To do this, level up a card to the maximum level allowed. You must then spend 100,000 silver coins and an Evo card (obtained from Tournament games) to evolve. The rarity of the player determines how many times you can evolve his card.
Gold coins
Gold coins are the game's premium currency. You can earn 3 gold coins by watching advertising videos. You can spend gold coins to get top tier cards and replaying power plays.
Power plays
When used correctly, power plays can give you a big advantage in a game. When passing the ball, swiping in the correct direction matters in order to avoid giving the ball to your opponent. Also try swipe correctly when making a shot. You also must act quickly when stealing balls or dunking. When done correctly power plays will also reward you with an extra card. It is usually to your benefit to pass the ball if given the choice between passing or shooting. Keep passing until your only option is to shoot. This will give you the best chance to win the power play.