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The ultimate accessory for Genesis/Mega Drive. Complete FPGA recreation of the entire Mega-CD/Sega CD hardware into a plug and play Cartridge

World’s First Mega-CD/Sega CD FPGA Optical Disc Emulator 

  • Plays both ISOS (bin+cue) and ROMS
  • RAM based cartridge for instant boot
  • Compatible with all original and region free patched Mega-CD / Sega CD bios
  • Supports Megadrive / Genesis, Sega CD / Mega-CD, Master System and 32X games (requires 32X add-on)

  • Beggar Prince
    Beggar Prince
  • Battle Brave Saga: Magic Warrior
    Battle Brave Saga
  • Blow 'em Out
    Blow 'em Out
  • Canon – Legends of the New Gods
  • Elf Wor
    Elf Wor
  • The Gadget Twins
    The Gadget Twins
  • Generals of the Yang Family
    Generals of the Yang Family
  • Handy Harvy
    Handy Harvy
  • Hangman SG
    Hangman SG
  • Hoops Shut Up and Jam! (aka Barkley Shut Up and Jam!)
    Hoops Shut Up and Jam!
  • Hoops Shut Up and Jam! (aka Barkley Shut Up and Jam! 2)
    Hoops Shut Up and Jam! 2
  • The Humans
    The Humans
  • The Immortal
    The Immortal
  • Kromasphere
  • Legend of Wukong
    Legend of Wukong
  • Magic Girl
    Magic Girl
  • Power Football
    Power Football
  • Radical Rex
    Radical Rex
  • Summer Challenge
    Summer Challenge
  • Super Noah's Ark 3D
    Super Noah's Ark 3D
  • Sword of Sodan
    Sword of Sodan
  • ThunderBolt II
    ThunderBolt II
  • Tinhead
  • WarpSpeed
  • Water Margin
    Water Margin
  • Winter Challenge
    Winter Challenge
  • World Trophy Soccer
    World Trophy Soccer

  • Officially Licensed From:Piko InteractiveSecond Dimension

Fully Supports original Megadrive and Genesis hardware (Nomad included but requires simple mod to get audio cd on sega cd games) 

  • Fully compatible with Analogue Mega Sg!
  • Easy to use interface for navigating your collection with screenshots, genre, year and description
  • Save State support for Megadrive and Genesis Cartridge games (8 slots)
  • Built in cheat engine for Megadrive and Genesis cartridge games
  • Emulates all different Genesis / Mega Drive / Master System / 32x cartridge mappers.
  • Stores all different Genesis / Mega Drive / Master System / 32x cartridge saves into microsd card.
  • Per game Mega-CD / Sega CD Backup RAM and Cartridge RAM stored into microsd card
  • Master System FM Core
  • In-Game menu for fast reboot and swapping games (Genesis / Megadrive and Mega-CD / Sega CD)

Enhanced Mega Drive games with CD audio and Mega-CD / Sega CD hardware (MSU1 like) 

  • 400GB Exfat microsd supported

Download the instruction manual in PDF (English)

X3 vs. X5 vs. X7 vs. MegaSD:


A) PIRACY – Stone Age Gamer Retroworks, Inc. ("Stone Age Gamer") does not support or condone piracy. Flash carts and similar devices Stone Age Gamer sells and supports are intended to be used only for the following purposes: development, playing games licensed by Stone Age Gamer for use with the product, and/or playing currently owned personally backed-up games and media where it is legal to do so. Stone Age Gamer does not offer support for any other use of this product.

B) PERSONAL BACK-UPS – In many territories it is legal to make back-ups for personal use and/or archival purposes, however it may not be legal in all territories. Please learn the national and local laws regarding this subject before making back-ups for personal use. Please note, in most territories "Personal Back-up" means exactly that; back-ups you made yourself of games you currently own. This often does not include back-ups obtained via other methods (i.e. downloading), even if it is a game you physically own.

C) DAMAGE – Neither Stone Age Gamer or the manufacturer is responsible for any damage of property this product may cause. This is a new product intended to be used on electronic hardware that exceeds two decades in age and Stone Age Gamer can’t guarantee the condition of such hardware. USE AT YOUR OWN RISK.

D) MODIFICATION & USE – Any unauthorized modification and/or non-intended use of this or any other flash cart product sold by Stone Age Gamer shall void both manufacturer and retailer warranties of that product.

E) CLONE / MODIFIED CONSOLES – Flash carts were developed and intended to be used on un-modified original hardware using original hardware accessories. Stone Age Gamer does not guarantee flash cart operation on clone consoles or modified consoles. Flash carts may operate on some clone consoles or modified consoles. However, due to power consumption changes, random hardware changes and/or firmware updates of those consoles we cannot offer a guarantee of flash cart compatibility. Any returns due to incompatibility with clone consoles or modified consoles will result in no refund of any shipping costs and a 10% restocking fee if no defect is found during testing.

20 Reviews

  • 5
    Great service

    Posted by Steven Ngu on Jan 23rd 2022

    I got the item safely and quickly.

  • 5
    Best Cartridge Ever

    Posted by BigPep243 on Sep 28th 2021

    I paired this up with my Analogue Mega SG and this is an excellent solution. TerraOnion is an excellent company that provides firmware updates for their products. Ever since I got this cartridge my product has received like four updates and that is nice because there are still Genesis games being released. The compatibility with newer games that are purchased online from indie websites will work on this. I recently purchased Demons of Asteborg and it worked after I updated the firmware. Plus, if you want to explore the Sega CD library you can play it on here. I have had no issues with this cartridge and I highly recommend it.

  • 5
    Great FPGA solution for cartridge AND CD based games

    Posted by M.S. on Aug 31st 2021

    This is a great piece of hardware to complement your Sega Genesis / Mega Drive. It is the simplest plug and play solution to play all your legitimate cartridge AND CD based game backups. Terraonion really improved upon the design of this device after the release of the Super SD System 3. This is probably my second favorite device from Terraonion which I own (with MODE being number 1).

  • 5
    Simply the best!

    Posted by Robert Glunt on Jul 24th 2021

    This is hands down the best cart for the Sega Genesis. I now have access to every game worldwide for the Genesis, Sega CD and the 32x all in one cart! Buy from here and get the best customer support possible. Thanks to Stone Age Gamer for bringing us the best possible products with the friendliest staff and best customer service!

  • 5
    Mega SD

    Posted by MarkW on Jun 26th 2021

    Like Krikzz Mega Everdrive Pro, the Mega SD cart plays all Sega Genesis, Sega Master System, and Sega CD games but has a friendlier user interface and allows the user to back out of Sega CD games and into the Main Menu without having to turn the Sega Genesis console off and then on again - the Mega Everdrive Pro doesn't allow this. For me its a big plus since I use this primarily for Sega CD gaming. Another plus is that no battery is required for saving games and data, the Mega Everdrive Pro requires a battery. I love this cart and is well worth the price.

  • 4
    Mega SD is the ONLY comprehensive solution for Genesis/Mega Drive

    Posted by Nima Zeighami on Jun 25th 2021

    The Mega SD is the only flash cart anyone should consider. Has support for 99% of the Sega Genesis/Mega Drive library, including Sega CD and almost everything from Sega 32X.

    With the MSDEXP adapter, it even supports Sega 32XCD games, even on an FPGA system like the Analogue Mega Sg!

    I've been playing Sega CD games with it on my Mega Sg and absolutely love it! Titles like Snatcher work perfectly.

    I'm knocking off one star only because some errors don't have robust and verbose messaging. I had issues with one of three of my region BIOS's not being identified for some reason, and issues with certain Sega CD games not being read.

    Make sure to update the Mega SD before using it as it solves a lot of problems you might encounter!

    All in all, strongly recommend it, even for the price. It's a no compromise Sega experience!

  • 5
    Best Genesis Flash Cart

    Posted by William Rohrig on Jun 17th 2021

    This is bar none the best flash cart you can buy for the Sega Genesis. Not only does this cart feature all the things previous Genesis flash carts support such as SMS support, 32X support (Still need an actual 32X) and full support for the Genesis library but TO went the extra step and added Sega CD support through the FPGA, no Sega CD unit required. I can say they nailed it. Compatibility is near perfect, I spent many hours with this device trying every game I could think of and I had no problems whatsoever. Sega CD games on this run just as they do on a real system. I would only recommend this cart to people who are looking for Sega CD though since the rest of this cart's features are covered by the cheaper Mega Everdrive X7 but if you want Sega CD without having to deal with aging optical drive hardware then this is the cart to get.

  • 5
    A must-have Sega Genesis companion

    Posted by John Mora on May 24th 2021

    Devices like the Mega SD are absolutely vital for the future of preserving retro gaming experiences. Not only does it let you use the perfectly good console you likely already have (or can purchase on the cheap), but it bypasses the finicky CD add-on which as time goes on will be more and more prone to malfunctions and optical discs that may begin to rot 30+ years into their lifetime.

    Mega SD gives you a way to turn your Sega Genesis and its library into a "forever" console of Sega history, able to play Master System, Genesis, and CD games right out of the box, with 32X and 32X CD games possible through that add-on and expansions. You can even play Genesis games in ways they were never meant to be played with the ultra-cool MD+ format that lets you play Genesis games with CD-quality soundtracks! All of this contained in a no-nonsense UI with lots of functionality. I recommend getting the protective case along with your copy in order to preserve and show-off this really top-notch piece of engineering. No Genesis or Mega Sg should be without one!

  • 5

    Posted by Simon Graveline on Apr 25th 2021

    This is an essential piece of accessory. It's great that it reads so many cd image formats... so user friendly!