Balance the Chi!

In ChiBalance, your goal is to keep a delicate statistical equilibrium. Red and green Dotkins fall from the sky – and only the green ones are under your control.

🔴 100 red Dotkins fall in a fixed left/right distribution.
🟢 50 green Dotkins fall randomly – but you can steer them left or right while they pass through the green decision zone.

🎯 Your task:
Adjust the placement of the green Dotkins to counterbalance the red ones and minimize the chi-squared value in a 2x2 contingency table.
The fewer deviations from chance, the better your score!

📈 At the end of each round, the game computes the chi-square test for independence – and you’ll level up only if the result is not significant at the 5% level.

How to play:
👉 Tap on the left or right side of the screen while a green Dotkin is in the green zone to steer it
👉 You cannot control red Dotkins – they represent the “given” distribution
👉 Earn more points the smaller the chi-square value is

🧠 A playful take on the logic behind the chi-square test
🚀 Built in Unity
🔢 Perfect for introducing statistical inference and categorical data analysis

Code and concept by Wolfgang Trapp, with support from ChatGPT for structure and wording.
All Dotkins are handmade. No Dotkin was harmed in the making of this game.

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