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?
- 200 Unique & Challenging Puzzles
- Game Center Achievements (V, X, L, C, CC)
- Game Center Leaderboard for Highest Level
- Beautiful Music, Sounds, and Retina Graphics
- Universal App looks Great on iPhone and iPad
- Share Solution Photos with Friends
Thanks for playing XXI by TMSOFT and good luck!
iPhone X support and additional improvements under the hood.
Ratings and Reviews
Fun and challenging without being frustrating. A little easy to start, but by the 100th level, it starts to get interesting.
Really addictive platform that made me lose time and stay up waaaaaay too late. Save some for Dad now
TM Soft does it again with an addicting and challenging game that keeps me entertained in waiting rooms, passenger seats of cars, and at work.
Challenge friends and check leaderboards and achievements.
With Family Sharing set up, up to six family members can use this app.