Dont want to Damage your original copy and keep it in mint condition. This is your alternative..
This is one of the more expensive games for the Sega CD.
 
The Space Adventure (Sega CD) Details
 
Cobra is back! A new disguise hides his true identity as he returns to blast the space trash that is terrorizing the innocent victims of the universe. With the mega-powerful Psycho-gun hidden in his left arm and his faithful partner Armaroid Lady riding shotgun, he's gonna be tough to beat. But his back's against the wall. The evil Pirate Guild is after his scalp, the Galaxy Patrol wants him dead or alive and there's a beautiful woman lurking in the dark depths of space waiting for him. Phew... talk about hot action! So hang on and get ready to zoom off to the outer reaches of time and space with the master renegade of the first degree... COBRA! – non-stop action with over 1500 stunningly rendered original animations – superb full-motion graphics port you to a future realm of mystery and intrigue – Blast away with a booming CD soundtrack that puts you right in the thick of things
 
Full Price Guide: The Space Adventure (Sega CD)
Loose
$233.10
Item & Box
$477.14
Item & Manual
$386.00
Complete
$612.77
New
$679.99
Graded CIB
-
Graded New
$4,999.99
Box Only
$244.04
Manual Only
$152.53
 
 
Ebay link.
 
https://www.ebay.com/itm/176546120937?_skw=the+space+adventure+sega+cd&epid=7224&itmmeta=01K84KMNC3GEP1B0YB6S1WB86Q&hash=item291af804e9:g:854AAOSwXlNmzifT&itmprp=enc%3AAQAKAAAA4FkggFvd1GGDu0w3yXCmi1dJ87Wi3lBF9wIbg7zw7EWFS9VurcsoUeStQCFFLsG7xEKxFspvjzEx5VAMh6olPMvlbb%2F%2BNOc1jFIlecUT3zaNJUzR4zgpPHlo4zgwUx1xwcowfxVAH9la8veJWkWH0ZKaijRuuwpm2LeM9nuQjThPEpsFCliS%2FtyR0lhKUYmMZQnomCNbbJQyaWlNFNxT5JdDHOYq8189%2FM47%2Ba80hqCmSIyyNpcXcWY%2BvATuit1KBvg8Il4bKC%2BX6IVxjNOBjXSOccUf8EDg4wfrUtzFcL0q%7Ctkp%3ABk9SR5bW0pPBZg