class Game
# public field 
attr_accessor :name, :year

def initialize(name, year, developer)
@name = name
@year = year
@developer = developer
end

def show_developer
puts "developer is '#{developer}'"
end

private
# private field 
attr_reader :developer
end

game = Game.new("S.T.A.L.K.E.R.", 2007, "GSC")
puts "name is '#{game.name}'"
puts "year is #{game.year}"
game.show_developer()