Interesting, just one question out of curiosity: did you prototype all the phases that you described here? Like, did you actually implement the character moving or was it just a document/mental idea/etc?
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Only mental idea at start, trying to simulate the gameplay in my head and imagine what the interface of the game would look like, what would be the player actions what would happen on screen, and what were the issues with this idea. But once I had the grid idea, I tested it with a simple prototype with pieces of a board game, which can be really helpful too to help visualize ideas