# 21 GO! — For the card counting curious > Skill-based card game inspired by 21, with strategy and prize tournaments. (iPhone/iPad app by One Armed Bandit LLC.) - Source: https://appshunter.io/ios/app/21-go/id1639412191 (this page in markdown: same URL + `.md`) - Developer: [One Armed Bandit LLC](https://appshunter.io/developer/1616333039) - Category: Games, Card, Strategy - Price: Free - Rating: 4.86/5 from 7 App Store ratings · 4 written reviews indexed - Age rating: 17+ - Requires: iOS 12.0 · 316 MB - Languages: English, French, German, Italian, Japanese, Portuguese, Russian, Chinese, Spanish - Released: 2022-11-17 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/21-go/id1639412191/reviews.md ## What is 21 GO!? 21 GO! is a skill-based card game inspired by classic 21. The goal is to defeat the dealer by accumulating a hand of cards as close to 21 as possible without going over. Outcomes are based on skill – make the decisions to perfect your optimal strategy and you will be rewarded!. This game is for the casual player looking to learn card strategy and for the veteran player looking to hone their skills. Sharpen your skills against other players for free or show off your skills by competing for real-world prizes! How to play • Make game decisions based on optimal strategy • Minimize or Maximize your confidence to win based on the shoe count • Complete as many rounds as possible before time runs out • Earn multipliers for speed, skill streaks, and bonus rounds Special Features • Life to date summary of key statistics • Expected value summary provided after every match • Realtime combinatorial analysis to compute expected values • Challenge players of all experience levels with Skillz, a competition platform complete with leaderboards, trophies, and real-world prizes. • Prize tournaments are available in about 75% of the world. Prize tournaments are not enabled in the following states: AZ, AR, CT, DE, IN, LA, ME, MT, SC, SD, AND TN. If you don't live in a real prize-enabled region, you can still play for fun and sharpen your skills on your way to becoming an advantage player. If you have questions regarding 21 GO!, please reach out to us at onearmedbanditentertainment@gmail.com If you have questions regarding the Skillz Platform or cash tournaments please contact: support@skillz.com ## Key features - Skill-based card gameplay - Optimal strategy decision-making - Compete for real-world prizes - Life-to-date statistics summary - Real-time combinatorial analysis - Leaderboards and trophies ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/21-go/id1639412191/reviews.md ### 5/5 — Superior Stats *2023-01-30, version 1.3.1* This is the only 21 game I know of that accurately measures expected value. EV is the best way to measure your abilities as an advantage player and the only way to accurately compare your skill against other players. ### 5/5 — Great *2022-12-07, version 1.3* My uncle made this game. I like it because you can make money ### 5/5 — Ready for Vegas *2022-12-06, version 1.3* I am now much better at card counting. I hope that it pays off somehow. Thanks for the lesson bros. ### 5/5 — Cool way to learn advantage play *2022-11-20, version 1.3* This app scores you based on basic strategy and hi-lo card counting strategy. The stats it tracks are cool-it actually uses expected value. Super helpful for practicing for the real casinos. ## Frequently asked questions about 21 GO! ### What is 21 GO!? 21 GO! is a skill-based card game inspired by classic 21. The objective is to get a hand as close to 21 as possible without going over, by making optimal strategic decisions. ### Can I play 21 GO! offline? The provided description does not specify if 21 GO! can be played offline. However, its competitive features and prize tournaments suggest an online connection may be required. ### Does 21 GO! have multiplayer? Yes, 21 GO! allows you to challenge other players for free or compete for real-world prizes through the Skillz platform, which includes leaderboards and trophies. ### How does 21 GO! compare to other 21 games? 21 GO! differentiates itself by focusing on skill-based decision-making and offering opportunities to compete for real-world prizes, unlike many traditional casino-style games. ### What are the prize tournament restrictions for 21 GO!? Prize tournaments are available in approximately 75% of the world but are not enabled in AZ, AR, CT, DE, IN, LA, ME, MT, SC, SD, and TN. You can still play for fun in these regions. ### What is the age rating for 21 GO!? 21 GO! has an age rating of 17+, indicating it is intended for mature audiences. ### How often is 21 GO! updated? The latest version of 21 GO! is 1.3.1, which was last updated on December 26, 2022. This suggests updates are released periodically. ### What devices support 21 GO!? 21 GO! is supported on iPhone, iPad, and iPod devices. ## Version history (last 1 release) ### 1.3.1 — 2022-12-26 Updated app screenshots ## Apps similar to 21 GO! | App | Rating | Price | Category | | --- | --- | --- | --- | | [21 Clash: Win Cash](https://appshunter.io/ios/app/21-clash-win-cash/id1658742195) | 5.0 (15) | Free | Games | | [ELITE EYE QB](https://appshunter.io/ios/app/elite-eye-qb/id1587771713) | 5.0 (3) | Free | Games | | [Warships Arena](https://appshunter.io/ios/app/warships-arena/id1613308125) | 4.5 (13) | Free | Games | | [Snail Puzzle Mind Brain Game](https://appshunter.io/ios/app/snail-puzzle-mind-brain-game/id1590227901) | 5.0 (8) | Free | Games | | [Sinking Space Queen](https://appshunter.io/ios/app/sinking-space-queen/id1536267885) | 4.4 (5) | Free | Games | | [Basketball Blasters](https://appshunter.io/ios/app/basketball-blasters/id1560957874) | 3.2 (10) | Free | Games | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*