Thank you for viewing. This is the Sega Mark III / Master System game "Ys". Game Title: Ys Model Number: G-1370 Included: Box and Instruction Manual Tested and working. SEGA MARKⅢ / Master System I have confirmed that it works on the Mega Drive with a Sega Mega Adapter. Images 11-12 show the startup confirmation screen. There is some distortion at the bottom of the screen in image 12, I have read that this can occur when using the Mega Adapter, but I am not certain of the details. I don't think it will affect gameplay, but please be sure to confirm this yourself before purchasing. The case box and instruction manual show signs of deterioration and corner wear. Please purchase only if you understand that this is a used item from the past. Stored and inspected by an amateur. Shipping is planned via Yu-Packet Post Mini. I am also selling other game software. Please take a look if you like. #MASTERSYSTEM #MARKⅢ #マスターシステム #セガマークⅢ #ゴールドカートリッジ #GOLDCARTRIDGE