What is the Pazaak Cantina Online game, how does it work?

According to the introduction of One Seven Games, Pazaak Cantina Online is a Card game on the Android platform. There is currently a 1.0.1L version released on Apr 29, 2019, you can see the details below.

Welcome to Pazaak Cantina Online.

PAZAAK IS BACK
Pazaak is a card game similar to Blackjack - but with a twist. To keep it short, the goal of the game is to have your cards values add up to as close to 20 as possible. If your opponent has a higher score than you, they win. Simple right? Not so fast, let's see what happens when players are able to use a card of their choosing during each turn... Do you have what it takes to be the Pazaak Champ?

ONLINE HEAD-TO-HEAD MATCHES
Face off against random players or your friends in the online wager matches! These matches are played against 1 other player and the victorious will receive a nice surprise! Can you swindle opponents at their own game?

FULLY OFFLINE MODES
Play offline against the AI in quick-paced wager matches. Also try the offline campaign mode where you can travel to 7 other planets and face off against the current Pazaak Champ of each planet. Do you recognize any of these famous Champs?

UNLOCK OVER 70 CARDS
Create your dream Pazaak Deck by unlocking and using over 70 cards. Do you know the amount of unique decks you can create? (Hint: A lot)

CUSTOMIZE YOUR CARD DESIGNS
Unlock and apply cool designs that change the appearance of your Pazaak Deck in matches! What would your ideal Pazaak card design be?

VIEW STATISTICS AND LEADER-BOARDS
View your personal statistics and see how you stack up to the pro's via the leader-boards. Are you really as good as you think?

UNLOCK ACHIEVEMENTS
With 50 achievements to unlock, there is always something to work toward! Will you be able to unlock them all?

GET YOUR NAME ADDED TO THE GAME
Since the game is free to play, there are some options for those who would like to show their support financially. Getting your name added to the game is one such option, and it is a pretty cool opportunity! Your name will be added to the names used by the AI in offline wager matches. This means that thousands of players will be playing against your AI every day! What opponent name will you have added to the game?