- Developer: Simple Machine, LLC
- Website: Official website
- Release Date: 2017-02-23
- Supports: Game Center,Family Sharing
- Languages: English
- Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Summary
## Description
A super simple card game based on just one rule:
Swipe left: If you think the next card is 21 or less.
Swipe right: If you think the next card is over 21.
Are you lucky enough to get to level 21?
Lucky 21 has no in-app purchases!
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