minetest.register_on_newplayer(function(player)
        local formspec = "size[20,4]" ..
        "label[0,1; You are Noodle striker, a duck that has to finish a game for a jam in 4 hours]" ..
	"label[0,2; Go and buy some pepperoni.]" ..
        "button_exit[9,3;2,1;ok;OK]"

    minetest.show_formspec(player:get_player_name(), "duck_game_the_first_idk:greeting", formspec)
end)

minetest.register_on_player_receive_fields(function(player, formname, fields)
    if formname == "duck_game_the_first_idk;greeting" and fields.ok then
        player:set_inventory_formspec(nil)
    end
end)