21 Blitz: Single Player
21 Blitz: Single Player Summary
21 Blitz: Single Player is a ad-supported, with in-app purchases Android app in Card by Tether Studios LLC. Released in Apr 2021 (5 years ago). It has about 208.7K+ installs and 599 ratings with a 3.67★ (average) average. Store metadata: updated Feb 16, 2024.
Recent activity: 84 installs this week (199 over 4 weeks) showing below average growth View trends →
Advertising: AppGoblin detected 1.00 monetized ad creatives shown inside the app.
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 Jul 13, 2025.
Store info: Last updated on Google Play on Feb 16, 2024 .
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.
Amplitude
Firebase
Facebook
Google
AppsFlyer
JetBrains IntelliJ
Unity
JetBrains3.67★
Ratings: 599
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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