21 Blitz: Single Player

1.01

Tether Studios LLC

3.60

563 reviews

100,000+
Downloads

Free

Practice your classic Blackjack skills in a modern version of the card game.

This app is currently not available on Google Play.

Try these apps instead

About 21 Blitz: Single Player

21 Blitz: Single Player was a card app developed by Tether Studios LLC. It was removed from Google Play May 14, 2026 and is no longer available for download.

Download Statistics

21 Blitz: Single Player had been downloaded 210 thousand times before it became unavailable.

User Ratings

21 Blitz: Single Player was rated 3.60 out of 5 stars, based on 560 ratings.

App Information

21 Blitz: Single Player was free to download. The APK download size was 81.88 MB. The last available version was 1.01. The last update was on February 16, 2024.

Technical Requirements

21 Blitz: Single Player required Android 6.0+ or higher. The app had a content rating of Everyone. The app had been available on Google Play April 2021.

Description

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!

♠ ♣ ♠ ♣ ♠ ♣ ♠ ♣ ♠ ♣ ♠ ♣

Recent changes:
New performance optimizations and bug fixes

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More data about 21 Blitz: Single Player

Price	Free to download
Total downloads	210 thousand
Rating	3.60 based on 560 ratings
Version	1.01
APK size	81.9 MB
Number of libraries	29
Designed for Android	6.0+
Suitable for	Everyone
Ads	Contains ads

App Performance Report

Get a detailed PDF report for 21 Blitz: Single Player with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

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Comments on 21 Blitz: Single Player for Android

★★★★★ Carter Edwards · May 21, 2023

I love this game. It is very fun and exciting

★★★★★ Esther Daniel · Sep 23, 2023

It keeps u busy and help u fast in terms of calculative

★★★★★ Kyle Tracey · Sep 27, 2021

Wow I just won 2 million doll hairs in my first week I couldn't believe it. Hopefully I can win the 2 million doll hairs each and every week as they state

★☆☆☆☆ Akao Anthonia · Aug 18, 2025

Very useless and fake game you don't get any money from this game

★☆☆☆☆ Samantha Lobato · Jul 31, 2022

Do not play for money I can come in top 30 players, and I'll still be down $1000s. They allow cheaters and the algorithm is not fair.

★☆☆☆☆ Bill · May 20, 2024

Would someone please help me how do you play cash games I put money on, but I have all free games except myself how can I bet 😭

★☆☆☆☆ Austin Shenk · Apr 25, 2022

Don't trust these guys are thieves! I guess I was too good because I win barely a good amount of money, and they got the clever, not, idea of banning me for breaking g the rules. What rule? Doesn't even say which one, but I'm sure they will make one up. I'm writing bad reviews everywhere believe me and reporting your company to the proper places. Also giving you guys free publicity in my editorials next entry. All publicity is good publicity right? Even when it's accusing you of fraud.

★☆☆☆☆ Jenny Vicky · Jun 8, 2025

I mean how would you get money when you will wait for 3 to 4 weeks no but let me try and wait if it doesn't work I'm deleting ASAP

Technologies used by 21 Blitz: Single Player

21 Blitz: Single Player is requesting 14 permissions and is using 30 libraries.

Permissions

Network communication

view network connections, full network access, Google Play billing service, receive data from Internet

Hardware controls

control vibration

System tools

prevent phone from sleeping

Extra

android.permission.ACCESS_ADSERVICES_AD_ID, android.permission.ACCESS_ADSERVICES_ATTRIBUTION, android.permission.POST_NOTIFICATIONS, com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE, com.google.android.gms.permission.AD_ID, com.samsung.android.iap.permission.BILLING, com.tetherstudios.blitz21practice.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION, Can receive cloud messages

Ad network libraries

None found

Social libraries

Facebook

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Firebase Android Library Icon

Firebase

Android Jetpack Annotations Android Jetpack Widgets Android Library Icon

Android Jetpack Widgets Android Jetpack AppCompat Android Library Icon

Android Jetpack AppCompat AndroidX Loader Android Library Icon

AndroidX Loader Android Jetpack Media Android Library Icon

Android Jetpack Media Google Cloud Messaging (GCM) Android Library Icon

Google Cloud Messaging (GCM)

Android Transition Support Library

Android Support Library collections

Android Support VectorDrawable

AndroidX Legacy: Support Library core utils AndroidX Cursor Adapter Android Library Icon

AndroidX Cursor Adapter

AndroidX Local Broadcast Manager

Android Support Library Print

Android Support Library Document File

AndroidX Legacy: Support Library core UI

Android Support Library Async Layout Inflater Okio Android Library Icon

Okio

Google ZXing Google Protocol Buffers Android Library Icon

Google Protocol Buffers BoltsFramework Android Library Icon

BoltsFramework Dagger Android Library Icon

Dagger

Unity 3D

FMOD Ex Programmers API Android Library Icon

FMOD Ex Programmers API Amplitude Android Library Icon

Amplitude

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