It comes with 2 memory cards, 3 controllers, and a 512gig sd card full of dreamcast games. You may have to google morw about gdemu, but it''s very simple. I bassicly modernized it added a dreampsu, which is the power source, added a stronger fan reshelled it completely. Brand new adpater and a hdmi converter. A lot of work went in it. Its littlerly like new all the parts are new besides the controllers and memory cards