XXI: 21 Puzzle Game

XXI puzzles require a sum of 21 in every row and column. Move the gems around on the board until a solution is found. All gems have a unique numerical value, but watch out for the special gem that can be either a 1 or 11. Puzzles get harder as you progress your way through all 200 levels. Can you become a XXI champion?

FEATURES
- 200 Unique & Challenging Puzzles
- Google Play Achievements (V, X, L, C, CC)
- Google Play Leaderboard for Highest Level
- Beautiful Music, Sounds, and Graphics
- Optimized for all Android Phones and Tablets
- Share Solution Photos with Friends

Thanks for playing XXI by TMSOFT and good luck!

Website: https://games.tmsoft.com/xxi/

XXI is an engaging and thought-provoking puzzle game that challenges players to strategically remove numbered tiles from a grid to achieve a specific goal. The game's objective is to remove tiles so that the remaining tiles add up to 21 or multiples of 21.

Gameplay

The game is played on a 6x6 grid filled with numbered tiles. Each tile represents a number from 1 to 9. Players can remove tiles by tapping on them. When a tile is removed, all tiles adjacent to it (horizontal and vertical) are added together. If the sum of the adjacent tiles equals 21, they are also removed.

The game progresses through multiple levels, each with its unique grid layout and tile arrangement. As players advance through the levels, the challenges become increasingly complex, requiring strategic planning and careful tile selection.

Features

* Multiple Levels: XXI offers a wide range of levels, each with its unique set of challenges.

* Unlimited Undo: Players can undo their moves at any time, allowing them to experiment with different strategies.

* Hints: The game provides hints to help players when they get stuck.

* Global Leaderboards: Players can compete against others worldwide on the global leaderboards.

* Clean and Intuitive Interface: The game's interface is designed to be user-friendly and easy to navigate.

Strategy

To succeed in XXI, players must develop a strategic approach to tile removal. Some effective strategies include:

* Plan Ahead: Consider the potential consequences of removing a tile before making a move.

* Create Combinations: Try to remove tiles that will create combinations of 21 with adjacent tiles.

* Eliminate Singles: Removing tiles that are not part of any potential 21 combination can simplify the grid.

* Use Hints Sparingly: While hints can be helpful, overuse can hinder the development of strategic thinking.

Conclusion

XXI is a highly addictive and intellectually stimulating puzzle game that offers hours of challenging gameplay. Its simple yet engaging mechanics, combined with its strategic depth, make it a perfect choice for puzzle enthusiasts of all ages. Whether you're looking for a quick brain teaser or an immersive gaming experience, XXI is sure to provide an enjoyable and rewarding experience.