The Match 3 game I enjoyed the most and I could imagine the slot one would work perfectly fine for your Neon Girls project! Must admit though, your first game with the colored balls I didn't really understand it's rules...
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Thanks for your feedback! Maybe the colored balls game felt a bit unclear because we didn’t add the ball‑movement animation(%)) — it was just a quick prototype. The idea is that the selected ball should move to the chosen spot if it can reach it, and the goal is to make a row of five balls or a diagonal. We’ll try to make this more visual in the future.