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Deep Sea Duel

By National Council of Teachers of Mathematics

This app is only available on the App Store for iOS devices.


Challenge Okta or a friend in a duel! Collect cards with the specified sum, and you win. But you better do it before your opponent does!

Choose the number of cards and type of numbers. Can you figure out a way to guarantee your win? We hope so!

Practice your strategy by playing against Okta. We hear she’s great competition. Okta learns as you do. She gets smarter each time you beat her!

This app was developed by Illuminations. It is also available as an online interactive along with accompanying lesson plans and guides. Visit to access these and more!

What's New in Version 3.1

new icon
removed incorrect language display


iPhone Screenshot 1
iPhone Screenshot 2
iPad Screenshot 1
iPad Screenshot 2

Customer Reviews

Surprisingly Challenging

Octopus gets smarter as you beat him. Eventually I could only tie him and even that was hard. Game ramps up nicely.

Head to head mode is our favorite though. Kids are way past tic-tac-toe at this point and this is great introduction to math strategy games.

Deep Sea Duel
View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Games
  • Updated:
  • Version: 3.1
  • Size: 8.1 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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