They started off as arcade cabinets, mostly consisting of 2D fighters, and sidescrollers.....When they turned the cabinets into consoles, they didn't remove the coin-op functionality so even the console versions of games.....They literally used a slightly modified Arcade mobo and implemented the console/tape relationship.....This meant the NG weighed 400 pounds and the tapes were as big as a Dr. Seuss book......And the $700 pricetag it boasted.