21 Blitz: Single Player
21 Blitz: Single Player Summary
21 Blitz: Single Player is a ad-supported, with in-app purchases Android app in the Card category, developed by Tether Studios LLC. First released 4 years ago(Apr 2021), the app has accumulated 189.8K+ total installs and 587 ratings with a 3.66★ (average) average rating.
Recent activity: 218 installs this week (896 over 4 weeks) showing declining growth , and 1 new ratings this week (1 over 4 weeks) with slowing momentum. View trends →
Advertising: The app has been identified as showing monetized advertisements based on detected ad network creatives.
Data tracking: SDKs and third-party integrations were last analyzed on Oct 15, 2025. The app's network data flows (API traffic to/from the app and its SDKs) were last crawled on Nov 14, 2025.
Store info: Last updated on Google Play on Feb 16, 2024 (version 74).
21 Blitz: Single Player was last scanned for SDKs 2025-10-15. Below is the overview of third party companies detected in the app. The full list of raw SDKs, app permissions and unknown SDKs is available here.
Google
Kotlin
Unity
Facebook
AppsFlyer
Firebase
Amplitude3.66★
Ratings: 587
Screenshots
App Description
Practice your classic Blackjack skills in a modern version of the card game.
Welcome to the official "21 Blitz: Single Player" experience! Blackjack meets Solitaire; a perfect challenge for aspiring card counters.
A game may only take a few minutes to play but you'll be setting high scores for hours! Enjoy a casual experience or reach a competitive level of play. You decide!
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HOW TO PLAY
• Each turn, choose from 1 of the 4 lanes to play a card.
• Make card stacks that add up to 21 to score points.
• Going over 21 will bust the lane. 3 busts and it's game over.
• String together combos and streak bonuses to perfect your strategy.
• Finish the deck before the clock runs out and you'll also receive a time bonus.
KEY FEATURES
• Play fast games on the go or from the comfort of your home!
• Leverage the "UNDO" button to peek ahead at the next card or reset any busts!
• Maximize your score with streaks and lane bonuses!
• Replay the same deck back-to-back to search for ways to improve your score!
• Learn tips and tricks from the included "How to Play" guide!
• Explore alternate game modes that introduce new challenges!
• Engage with smooth touch controls on all devices!
• Treat yourself to fast loading times and smooth animations!
• Challenge yourself to improve your best scores!
• Customize your card backs and background art!
• Rekindle your love of Blackjack!
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