HiLo is a higher/lower game where the answer range is between 0 and 99. You have do know or guess if the next number will be higher or lower than the given reference value. Subsequently, this number will become the new reference value for the next question or number.

There are 3 game modes:
- Quiz: The answer to the question is a number between 0 and 99. You have to know or guess if the solution will be higher or lower than the given reference value. Subsequently, this answer will become the new reference value for the next question or number.

- Maths: You have to solve equations. The solution is a number between 0 and 99. You need to guess if this solution is higher or lower than the given reference value. Subsequently, the solution will become the new reference value for the next equation.

- Random: You have to guess whether the next random number will be higher or lower than the given reference value. This number will subsequently become the new reference value for the next random number.