Hey there @khairulfaiz! Welcome to the community! When it comes to board games, I’d recommend starting with the board structure itself and planning how you want the pieces to actually move. If there’s a game you’d like to emulate specifically, you should pick apart the mechanics into smaller pieces that should be easier to put together. Here’s a couple resources for some direction or inspiration, but I’d definitely recommend tailoring your own approach after you understand the idea unless this style is how you’d prefer it.
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