These shells are designed to fit games with the dimensions (or smaller):

W:129mm H:177mm D:26mm

Some of the third party games will not fit in these shells, so please check the dimensions before ordering!

The Sega Master System, or the Sega Mk III as it was called in Japan launched in 1985 in Japan (1986 America, and 1987 in Europe) and sold approximately 20m units worldwide - a long way short of the 60m units sold by Nintendo for the Famicom/NES.

The games were mostly released in a hard case which meant that the boxes lasted longer, but they are still prone to cracking and splintering, so making sure that these gaming relics are protected should always be a priority. Some of the third party games will not fit in these shells, so please check the dimensions before ordering!

At RetroShell we want to provide the best products for video game preservation. Our products are precision made of the finest 4mm acrylic and will offer your precious retro games the best protection from damage. They are designed to stack vertically and can also be aligned horizontally allowing you to showcase your collection in all its glory, whilst keeping them safe from knocks and bumps.

Our bespoke cases ensure a snug fit with a custom trapdoor to easily access the boxes so you can continue to play these timeless classics.

If you are looking for the best game protectors/cases for your Sega Master System, trust in RetroShell.

Please note, these do not offer protection from UV and we always recommend keeping them out of bright light which can fade the boxes and designs.