As a math teacher, I had to try this game first.
'Mathphobia?' I said, my nostrils flaring in mingled rage and excitement. 'Is this an ANTI-MATH game????'
Fortunately, it's not. Well, kind of...
You play as a kid who is forced to do 500 math problems on Halloween since you didn't go trick or treating to get candy for your teacher.
But you soon are transported to a magical land like phantom tollbooth where monsters such as the Specter of Subtraction try to attack you.
All challenges are defeated by use of math, starting with extremely easy problems (like 8 plus 4) and moving to harder problems like sequence finding, number factoring, fraction simplification and trick problems.
I proudly conquered each problem by hand except one where I suspected a trick, plugged it into calculator to check, then confirmed the trick (so I failed at doing it all myself!).
This game is much longer than it first appeared, with 5 main antagonists and sections between antagonists with 4 or more puzzles.
Outside of the math puzzles, the game seems completely linear. Going back and entering some answers incorrectly, it looks like it gives you another chance.
This was fun. I sent it to another math teacher to try out.