Twelve a Dozen - all access

App review by
Debbie Gorrell, Common Sense Media
Twelve a Dozen - all access App Poster Image
Heroine saves the day with math in lovely, fun platformer.

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The parents' guide to what's in this app.

Educational Value

Kids can learn about addition, subtraction, multiplication, and division, all while boosting problem-solving skills. Although they don't get specific targeted practice or drill-style worksheets, they get a highly engaging, meaningful learning experience. Even kids who are above the skill of addition in the first level will be engaged by the arcade-style gameplay as they use arrows and a button to guide Twelve through obstacles and challenges. If you're seeking a game that effectively combines learning and fundamental math skills with gameplay while promoting critical-thinking and problem-solving skills, then Twelve a Dozen is an excellent choice.

Ease of Play

Most kids will need to practice with the game controls before efficiently guiding Twelve through the challenges. 

Violence & Scariness

A town has been destroyed, but the theme is whimsical, which helps keep things lighthearted.  

Sexy Stuff
Drinking, Drugs & Smoking

What parents need to know

Parents need to know that Twelve a Dozen is an innovative, arcade-style game in which kids travel through a futuristic town while solving math puzzles. Kids use game controls to move young heroine Twelve through the obstacle-filled town of Dozenopolis so she can save her family. By using mathematical operations to make numbers, kids unlock powers that help them solve problems and overcome challenges. 

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What's it about?

A friendly, charming narrator (who is cleverly named "Dot" -- as in a decimal point) guides kids through the game, which starts with a brief story about the destruction of Dozenopolis. Kids are introduced to the main character, Twelve. Through 30 levels that increase in difficulty, kids help Twelve travel across the town so she can save her family. Along the way, they'll overcome lots of math-related challenges. For example, in the first level, kids have to add 1 to 12 to make 13. This unlocks a power so Twelve can pass through an obstacle. As kids complete each level, they unlock the next and get closer to helping Twelve and her family. Levels go by operation, including addition, subtraction, multiplication, and division. 

Is it any good?

12 A DOZEN is a rare gem that offers kids an opportunity to truly learn through gameplay. The story and characters are unique, the puzzles are fun and challenging, and Twelve's world is beautifully rendered. Kids will be entranced by the world of Dozenopolis -- the experience is so intriguing that it's downright addictive. With over two dozen levels of fun-filled adventure, kids likely will be so engaged that they won't even realize they're learning math.    

Talk to your kids about ...

  • Families can talk about how math is built into the game. What strategies can kids use to solve the puzzles? 

  • Have kids create some of their own puzzles. How do you create new numbers using math operations? 

App details

  • Devices: iPhone, iPod Touch, iPad
  • Subjects: Math: addition, division, multiplication, subtraction
  • Skills: Thinking & Reasoning: decision-making, problem solving, solving puzzles, thinking critically
  • Pricing structure: Paid, Free
  • Release date: September 29, 2014
  • Category: Education
  • Size: 700.00 MB
  • Publisher: Bossa Studios Ltd.
  • Version: 1.2.0
  • Minimum software requirements: iOS 6.0 or later
  • Last updated: November 11, 2020

Our editors recommend

For kids who love math fun

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