In simple terms, our artificial intelligence (AI) analyzes your activity in the game. It anonymously collects real-time data, noting:
What you succeed at,
What challenges you try (even if you don't always succeed),
How fast you make decisions,
When you're sure or unsure.
With this info, the AI adjusts the game's difficulty and creates exercises on the spot to keep you in a zone where things are neither too hard (so you don't get frustrated) nor too easy (so you don't get bored).
This zone is called the ZPD (zone of proximal development) and is at the heart of PowerZ's pedagogical approach.