SG-1000 / SC-3000 Cartridges (Sega pre-cursor to Master System)
Sega SG-1000 (SG1K, SG1000) & SC-3000 Games
So, if you did not know already, there was a Sega home console *prior* to the Master System/Mark III, it was called the SG-1000 and it had a home computer equivalent, the SC-3000 (the SG-1000 could be turned into a fairly compatible equivalent with the addition of an add-on keyboard, the SK-1100). There was an updated version of the SG-1000 available called the SG-1000 Mark II (thus the "Mark III" name of the SMS for the Japanese market)
These games consist of cartridges and cards. The cards require the use of a "Card Catcher" (カードキャッチャー) which is the equivalent of the card slot on the SMS/Mark III.
Why did we start buying them? Well, the SG-1000 is a CLOSE sibling to the ColecoVision and, well, uh, we started buying them for testing purposes. Yeah, *testing purposes*, that was it! So, when we bought some, were ended up with some doubles. These are those doubles. As we get more, we will also list those.
All of these games have been tested.