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All art is imitation friend
If you're just developing as a hobby, keep going.
If you're hoping to commercialise your project, then it's a bit trickier, and you might want to diverge from them. Or you can just make your game better than theirs, or have yours release first, or develop the community around it better.
The sad fact is you almost certainly won't make money from your game anyway, because virtually nobody does. If it's a hobby or portfolio thing, then ignore them and do what you want.