iPad Screenshots



An addictive multistep thinking game from MIND Research Institute's math curriculum featuring JiJi™ the penguin. The goal is to position lasers and mirrors to knock all balls out of the penguin's path. The puzzles start off easy, but get progressively more challenging as you move through the seven intriguing levels.


* Fun way to exercise multistep thinking.
* Raw problem solving without words. Suitable for all ages.
* Includes mind-bending bonus puzzles that look deceptively simple.
* Graphs your progress.
* Rewards quick thinking with time bonuses.
* Supports multiple player profiles.
* From the award-winning creators of STMath®.
* All new puzzles for those familiar with school version.
* Did we mention it's fun?

What’s New

Version 1.7.0

Support iOS 9
Bug fixes

Ratings and Reviews

4.2 out of 5
27 Ratings

27 Ratings

Gemini0673 ,

Hints, please

Our school utilizes the full program and the kids love it! They don't typically struggle until they reach the challenge section with Big Seed and Kick Box. I also allow students to play the apps during math centers. I know that the makers of this program would like to see kids persevere in solving a puzzle, but sometimes a little hint is needed. For the full program I have made "cheat sheets" for my students. After they have made so many attempts on a particular puzzle I will help them by telling them where one laser or one bar definitely belongs. This helps them tremendously, even when there are five more bars and lasers that still need to be placed. I would like to see this as an added feature in an update to the apps, especially Kick Box.

Rebekahwastakensohowsthis ,

Best challenging free puzzle game

This is the best free puzzle game I've found! The challenges start off simple and then get increasingly difficult. By the end, one puzzle took me over four hours to solve. I was frustrated enough that I would have taken a "hint" or "free pass" if offered, but none existed; so, I persevered. It was so rewarding to eventually figure it out!

HS Administrator ,

Foundational Learning

This is great for building schema in young children or adding missing pieces to older students. The other review about the "worst game ever" missed the point. This does not use judgements of right and wrong, only feedback and results. I love it.


MIND Research Institute
13.6 MB

Requires iOS 7.0 or later. Compatible with iPad.



Age Rating
Rated 4+
©2011 MIND Research Institute


  • Family Sharing

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

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