I have a array linked to my tilemap.
I want to generate multiple islands topdown that have enough space for the player to survive on before going to another island (building bases, etc)
A lot of survival games use a world seed. Will this help me?
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Here is a simple method of creating an island with 100 tiles:
Using seeded random is a good idea. You can generate many random maps, select one or few that look best, and save their seeds.