That's a unique combination. Finding the spy is not that hard, but beating him is not doable for me - I suck too much at these kind of games.
What's the engine used?
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Hey ! Thanks for the comment. The dance mode might be a bit hard, we will need to balance that or create a easy / hard mode.
The engine is a homemade engine called ÖbEngine : https://github.com/Sygmei/ObEngine
Feel free to reach me if you are interested in the engine :)