minetest.register_biome {
    name = "forest",

    node_top = "dirt_grass",
    depth_top = 1,

    node_filler = "dirt",
    depth_filler = 5,

    node_riverbed = "dirt",
    depth_riverbed = 3,
    
    node_dungeon = "cobble",
    node_dungeon_alt = "stone_brick_large",

    
    y_max = 3000,
    y_min = 2,
    vertical_blend = 2,

    heat_point = 50,
    humidity_point = 50,
}

minetest.register_biome {
    name = "plains",

    node_top = "dirt_grass",
    depth_top = 1,

    node_filler = "dirt",
    depth_filler = 5,

    node_riverbed = "dirt",
    depth_riverbed = 3,
    
    node_dungeon = "cobble",
    node_dungeon_alt = "stone_brick_large",

    
    y_max = 3000,
    y_min = 2,
    vertical_blend = 2,

    heat_point = 50,
    humidity_point = 30,
}

minetest.register_biome {
    name = "beach",

    node_top = "sand",
    depth_top = 1,

    node_filler = "sand",
    depth_filler = 2,

    node_riverbed = "sand",
    depth_riverbed = 3,
    
    node_dungeon = "cobble",
    node_dungeon_alt = "stone_brick_large",

    
    y_max = 1,
    y_min = -3,
    vertical_blend = 1,

    heat_point = 50,
    humidity_point = 50,
}