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About this card

A 512GB preconfigured card for Sega Dreamcast GDEMU boards. Built around a USA-focused library, with Japanese and European titles that never saw a North American release, plus Atomiswave ports as a bonus (430 games). Includes a microSD and full-size SD adapter for the GDEMU slot. This SD card solution will function perfectly with every different version of the GDEMU — original, later revisions, and clones. Compatible with all GDEMU boards.

  • 512GB high-quality microSD
  • SD adapter included for GDEMU
  • 430 games (Dreamcast + Atomiswave)
  • USA core set + select JP/EU titles + Atomiswave ports
  • Works with every GDEMU version — original, later revisions, clones, and all compatible boards

Browse the full 430-game list →

Don't have a GDEMU yet? Get the board + card kit

GDEMU V5.15b board with SD adapter

Three-piece kit for a disc-less Dreamcast: a GDEMU optical drive board (GDI/CDI V5.15b), the same 512GB preloaded card sold on this page (430 games), and a microSD-to-SD adapter. Ideal if you already have a console and want the board-and-card path.

  • GDEMU board V5.15b
  • 512GB card preloaded with 430 games
  • microSD → SD adapter included
  • Dreamcast + Atomiswave library
  • Genuine Imagemate media

Customer reviews — 5.0 ★ (13 reviews)

★★★★★

Vraiment content

Vraiment content, tout est parfait. La nostalgie est de retour.

★★★★★

All comes as mentioned

★★★★★

Quality item as described. Fast to get it out for shipment. Everything works great. Highly recommended seller. Top quality preloaded SD card. Don’t hesitate, you’ll love it! Thank you!

★★★★★

this is a good deal

★★★★★

Great great iis the best

★★★★★

It’s a great product. Works really well. I appreciate the work that went into creating it. Saved me the time and effort to make it myself.

★★★★★

Customer service, shipping, and packing all exceeded expectation. The card is LOADED and definitely will buy from again if I can get my hands on another GDEMU Dreamcast.

★★★★★

Everything perfect works way better more games too

★★★★★

This is just superb with the amount of the time and effort put into this product. I mean this seriously by context of work could save a person hours, days, weeks, if not months of effort put into building the files in such a way where every single file is working with artwork, which I’m still in disbelieve how much time this would take someone. If you want a one & done product for your mods, this is the shop for you. 5-stars around the board.

★★★★★

Went above and beyond, I actually ordered the wrong card and the seller went way out of his way to make it perfect

★★★★★

This item is exactly as advertised and what I was looking for. I got my item incredibly fast and I'm very pleased with this seller, would buy from them again in an instant.

★★★★★

Super seller! Item works great. Big selection of games. Appreciate you for looking out for us retro fans. I highly recommend you and would buy from again. Thanks :D

★★★★★

Fantastic! This is the best way to keep your Dreamcast going!

Frequently asked questions

Which GDEMU boards does this work with?

All of them — the original GDEMU, later hardware revisions, and clone boards. A microSD-to-SD adapter for the GDEMU slot is included.

Do I need a GDEMU installed already?

Not if you choose the “GDEMU board + 512GB card kit” option on this page — it includes the board, the preloaded card, and the SD adapter. For a fully modded Dreamcast console, visit SupremeRetroGaming.com.

What games are included?

430 titles — a USA-focused Dreamcast set plus Japan and Europe releases that never came to North America, plus Atomiswave arcade ports.

Do I need to format or set anything up?

No. The card is preformatted and preloaded with a Dreamcast boot menu — insert it and pick games with the controller. The full 512GB is usable.

What card is used and how fast does it ship?

A genuine 512GB Imagemate / Imagemate Pro microSD. Ships from the US every business day.

Have a question?

Ask us anything about this product before you buy — we'll reply by email.

Looking for additional retro gaming products?

Modded consoles, hardware kits, and preloaded cards for more systems.

Visit our other site at SupremeRetroGaming.com →