Help Allen the Alien get back to his home planet! Solve Sudoku puzzles to find his ship and other fun items for his journey.

Whether you’ve never played Sudoku before or you’re an experienced Sudoku player, you’ll love Sudoku In Space! If you’re new to Sudoku, Allen the Alien will teach you how to play with his step-by-step tutorial. Think you’re an expert at Sudoku? The colors-only mode will surely challenge your brain and skills!

· Four difficulty levels: Beginner, Easy, Medium, Hard.
· Hundreds of unique puzzles.
· Play in colors-only mode for a cosmic challenge.
· Play with numbers for a more classic challenge.
· Relaxing music and stellar sounds.
· Intuitive user interface that’s easy to navigate.
· Auto-save after every move so you don’t have to worry about interruptions.
· Three hints per puzzle to use without penalty.
· Step-by-step tutorial that teaches you how to play.

"If you’re looking for a new way to play Sudoku, or if you’ve never played before because it hasn’t appealed to you, try this. You might be pleasantly surprised, like I was! Score: A" - Nerdy But Flirty

"...pretty much blows the traditional paper and pen version out of the water. With this version of Sudoku you'll be treated to all kinds of fun and vivid colors, music, sound effects, and graphics, something you're probably not used to when it comes to Sudoku."

"Sudoku in Space is the sudoku game for people who thought they couldn’t play sudoku!...If you’ve always struggled with learning how to play Sudoku or you’re looking for a new way to play, you’ll definitely enjoy Sudoku in Space." -

"...sure to please Sudoku enthusiasts of all ages...I highly recommend this game to anyone looking for a fun and challenging Sudoku experience. - 4 out of 5 stars"
- The iPhone App Review

Sudoku In Space is available in English, Spanish, and Japanese.

What's New

Version 2.01.01

-New adventure story starring Allen the Alien
-Hundreds of more free puzzles
-Improved game design
-More great music

Ratings and Reviews

5.0 out of 5
5 Ratings
5 Ratings


I never thought I'd like sudoku but then this came along. So colorful and fun. Must try it out!
I love the new update. Speed input is a great addition and the story is a lot of fun!

LOVE 420


I think it's a great game. I love there is an option to not have numbers and just use colors.


Addictive Game

Nice brain game! Really cool stuff I found to play whole day.


Napland Games, LLC
25.1 MB
Requires iOS 5.1 or later. Compatible with iPhone, iPad, and iPod touch.
English, Japanese, Korean, Spanish
Age Rating
Rated 4+
© Napland Games, LLC 2014
In-App Purchases
  1. Unlock all puzzles and remove ads $1.99
  2. Add 300 easy puzzles $0.99
  3. 300 more medium puzzles $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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