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This page is about some homebrew cartridges for Sega Saturn :
- USB dev cart
- Saturn Gamer's Cartridge
Too many cartridge models ? Here is a simple comparative chart for each of them 
(Action Replay specs are given for reference only)
| Cartridge Name | Connectivity | RAM Extension | Main Feature |
|---|---|---|---|
| Action Replay | Parallel Port, @10KB/s | 4MB RAM | Cheap, easy to buy |
| USB dev cart | USB port, @300KB/s | No extra RAM | Fast USB transfer |
Saturn Gamer's Cartridge | SD card, @40KB/s | No extra RAM | XL-sized memory cartridge ! |
Came here to see Saturn homebrew cartridges pictures ? If so, gallery section is for you
Want even more ? Then please have fun in the custom shells section 
Saturn homebrew cartridges gallery (click on the link to see more) |
Custom 3D printed shells (click on the link to see more) |
USB dev cart is a cartridge that plugs into Saturn cartridge port and allow USB-based fast data transfer between your Saturn and PC.
Main purpose of this cartridge is to upload binary/executable data to your Saturn, easing the development of homebrew applications on Saturn.
Note: I have not designed this cart from zero by myself. It is the result of antime's work.
USB dev cart rev 3 (More pictures here) |
USB dev carts, first batch I assembled
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"Rev 3" cartridge, first public version by antime |
"Rev 1b" cartridge |
"Rev 1c" cartridge |
"Rev 2e" cartridge |
USB dev cart in official memory cartridge case. |
Hole for USB connector (hand-made ...) |
Codename : "SD MemCart" : this cartridge features a SD card interface and emulates backup memory cartridge behavior on SD card.
Fed up of limited memory size of your official memory cartridge ? Me too
Fed up of not being able to share your favorite Saturn RPG saves via internet to your gaming friends ? Me too
Gamer's Cartridge main features :
- Play import games. (*1)
- Play CD-R copy of your favorite games. (*2)
- Memory cartridge on SD card. (*2)
- Per-Game Saves (*3)
- Dump Saturn internal backup memory to SD card.
- Play small homebrew programs from SD card.
(*1) Bypass game region protection, so some games optimized for NTSC may not work well on PAL systems, and vice-versa.
(*2) Direct (in-game) save access, with relatively good game compatibility. Please check Pseudo Saturn Kai compatibility list for details.
(*3) Automatically imports save data from the SD card to internal memory when loading a game, and automatically exports it from internal memory back to the SD card when returning to Pseudo Saturn Kai. This prevents from flooding Saturn backup memory after playing several games.
IMPORTANT : Gamer's Cartridge is not an Optical Drive Emulator (ODE) and consequently doesn't plays commercial games from SD card.
Please take a look here or here or here or here if you are looking for an ODE for your favorite game console.
I plan to add few more features in cartridge's firmware (upgradeable on user side). Please check my blog from time to time in order to be informed about latest features additions
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後ほど少し説明を加える予定ですが、とりあえず外部リンクを貼り付けおきます。ぜひご覧ください♪ |
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デザエモンDB |
EXASGEMのブログ |
MDの窓 > Saturn Gamer's Cartridgeについて |
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Saturn Gamer's Cartridge Review. Video by retro dad and modern lad
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2022年版Gamer's CartridgeでサターンBIOS吸い出し手順のご紹介. ゲーム老人チャンネルから動画をリンクしています 
関連記事#1：【2022年最新】セガサターンのBIOSを簡単に吸い出す方法 関連記事#2：セガサターン BIOSを吸い出す方法(Saturn Gamer’s Cartridge) |
Gamer's Cartridge (early prototype), direct save example with Shining Force III Scenario 1 : video, making-of. |
Gamer's Cartridge (2016 release version), direct save example with Dezaemon 2 : video. |
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(More pictures here) |
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Gamer's Cartridge "2023 Spring Edition". |
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Gamer's Cartridge "2023 Summer Edition" |
Gamer's Cartridge "2023 Summer Edition". (Rear side) |
Under development. 
Links : wasca.info (for buyers), wasca on github (for developers).
Also, you can check my blog for any non-official informations about Saturn cartridges and other miscellaneous things.
Stock last updated : 2025 February 9th|
販売再開！ カートリッジのケースは3Dプリントされたモノになります。 3Dプリントのため、以前のラベル付きケースに比べて見た目や品質等は異なりますがご容赦ください。 お支払いや発送の流れを改善するため、カートリッジはメルカリにて販売しています♪ （売り切れた後補充いたしますのでメルカリのページを定期的にウオッチいただければ幸いです） 
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- A valid email address, so that I can contact you to continue ordering.
- Which country the dev cart need to be sent, in order to estimate shipping fees.
- The ID of cartridge you want to purchase. If not specified, I pick a random cartridge model for you.
Note #1 : In order to prove you're not a machine, please enter this homepage's webmaster favorite video game console name in "Turing Test" (*1) field. The name of this favorite video game console fits in 6 letters and is case insensitive.
Note #2 : It may require few days for me to reply to you. Please be patient. And don't re-send the some "did you read my message ?" email everyday : if I don't have time to answer one email, then I won't certainly have time to answer several emails 
Note #3 : In the case it's not clear enough, this form is to order a cartridge and not to get a quote, or to reserve a cartridge. If you don't have enough money in your paypal account, or enough money but not interested in paying, then this form is NOT for you 
Shipping :
Carts are shipped from Japan, and shipping price is described in EMS homepage in "Up to 500g" row.
EMS currency is JPY (Japanese Yen), and I convert it to USD when contacting your order details.
- Shipping to USA is JPY 3900.
- Shipping to Europe is JPY 3150.
Shipping within Japan :
日本国内の場合はゆうパックで発送いたします。
注文処理の簡略化のため、送料は日本全国一律600円を請求いたします。
※ 実際の送料はゆうパック料金表、「60サイズ」区分です。
1. Patiently wait until cartridge order flow is available above.
2. Select your cartridge and fill out informations in the order form.
3. Read the cartridge disclaimer and verify everything is as expected.
4. By clicking on "Send" button, an email containing your order informations is sent to me.
5. Then, after receiving your message, I transmit you the total price and when I can ship your cart to you.
6. After that, and if everything is OK, I ask for your shipping address, in order to write EMS shipping form.
7. When your cart is ready to be shipped, I send you my paypal address where you need to send the money to.
8. After receiving the money, I send you your cartridge by EMS and your parcel tracking number by email.
1. カートリッジ注文表が表示されるまでに待機
2. カートリッジ機種、ケース色やラベルの仕様決定
3. 注意事項について問題がなければ確認
4. 送付先の決定
5. 送料を含めて料金の確定
6. 封筒や送り状の準備
7. お支払い(注意：ペイパルのみ対応しています)
8. 送付及びゆうパック追跡Noのご連絡
(Common sense) rules around ordering process :
- Please don't contact me if you currently don't have money to purchase a cartridge : it's a waste of time for both of us.
- No preorder, no reservation. I simply don't like to sell something that is not assembled/flashed/tested/etc.
- No credit. I receive money, then send cartridge.
- I wait for payment for two (2, 1.414…2) days. If payment is not received after this delay, cartridge is put back for sale.
- I'm not a machine, so salutation words ("Hi", "Regards", etc) in your message are always appreciated
- Don't. Send. Many. Emails. At. Once. Grouping all your messages in a single one is better 
- カートリッジの注文はメールの交換で行いますので、注文フォームにてメールアドレスを入力してください。
- スパムメール対策のため、「ホームページ管理者の好きなゲーム機(英字6文字)」のチューリング・テストを入力してください。
- お支払いの通貨はUSD(米ドル)です。
- お支払いのタイミング「仕様確認後、送付前」です：予約や着払い等は対応していません。
- 返品、交換等も対応しません。
- デザエモン２向けの説明及び操作手順等はデザエモンDBにて参照できます。
(For French customers only 
)
Si vous habitez en France, je vous conseille de grouper plusieurs commandes via le forum de Darius, afin de réduire les fdp.
- Infos diverses : [TUTO] cartouches , pour tout savoir.
- Topic de ventes : Les Nouvelles Ventes de Darius - Ca Vient d'Arriver.
Gamer's Cartridge is "just" a XL-sized memory cartridge using SD card which also plays CD-R games : it is not an Optical Drive Emulator (ODE) and consequently doesn't plays commercial games from SD card. Please take a look here or here or here or here if you are interested in such kind of device.
Gamer's Cartridge doesn't feature extra RAM, so the few games requiring it (Metal Slug, and several fighting games. Complete list available on satakore.com) aren't compatible with Gamer's Cartridge.
Support of ODEs other than Rhea/Phoebe or Fenrir or Satiator is not guaranteed. So for example in the case of Terraonion MODE, cartridge backup access may not work.
Cartridges are hand-made : electronic components are hand-soldered, holes for LEDs and SD card socket are drilled and filed by hand, labels are printed, cut and sticked by hand, etc. So please don't order cartridge here if you're expecting to get something made at professional quality.
The cartridge may sometimes not boot to Pseudo Saturn Kai menu. This is usually caused by an improper connection in Saturn cartridge slot and is fixed by adjusting position of the cartridge.
(Same disclaimer as above, translated in Japanese)
・Gamer's Cartridgeでは拡張ラムが搭載されていませんので拡張ラムを使用するゲーム（SNKゲームなど、一覧表はこちら）は非対応です。
・仮想CD-ROMドライブ機能は非対応のため、SDカードからゲームの再生はできません。
・Rhea、Phoebe、Fenrir、Satiatorの仮想CD-ROMドライブは対応していますが、それ以外の場合(例：Terraonion社製MODE)はバックアップメモリのアクセスができない可能性があります。
・カートリッジは手作りですので、細かい出来上がりについて敏感な方は注文をご遠慮下さい。
・サターン本体との相性によって、カートリッジからPseudo Saturn Kai画面へ起動しない場合があります。
カートリッジの差し込みを調整することで起動できるようになります。
Last updated : 2016-06-13You can extract files from archives by using 7zip software.
| SEGA_Saturn_USB_devcard_Win7_64.pdf |
USB dev cart setup manual for Win 7 64 bit |
| SatLink_20170119.7z |
Software for use on Windows OS (sources included, works with Pseudo Saturn Kai) |
| usb_dev_cart_driver_20120723.7z | Driver for use on Windows OS (online readme) |
PCB sources :
Source files/old files that are not needed for cartridge normal usage :
| SatCom_release_20131014.7z | Software for use on Windows OS [Old] (sources included) |
| usb_cartrom_20130607.7z | USB dev cart firmware sources [Old] (online readme) |
| usb_cartrom_20120723.7z | USB dev cart firmware sources [Old] |
| SatLink_20120723.7z | Software for use on Windows OS [Old] |
Note #1 : Some of these softwares are adapted from antime's homepage.
Note #2 : Win7 64 bit setup manual is provided by the courtesy of Duranik team
Changelog:
- 2019/06/02: Added Rev 3.3 (c), (d) and (e) PCB sources.
- 2016/11/14: Added Rev 3.3 (b) and Rev 3.4 PCB sources.
- 2016/06/13: Added Rev 3.1, 3.3, 3.3 (a) PCB sources, and Kicad "2012-01-19" installer (Win32).
- 2014/09/09: Added "Rev 1b" PCB sources.
- 2014/11/21: Added "Rev 2e" and "Rev 2f" PCB sources.
- 2013/10/14: Added updated firmware sources.
- 2013/06/18: Added Win7 64 bit setup manual.
- 2013/06/07: Added "Rev 1c" prototype PCB and latest firmware sources.
- 2012/07/23: First release of USB dev cart firmware, driver and software.
Last updated : 2016-07-28Several labels are available for download here. Please choose and print your favorite one
Name : Cassini. Label that will remember you the good old times when Sega codenamed their projects with planets names
Credits : Nasa/JPL (Saturn picture) and jjennings089. |
Name : PCB. A label for thoses who like to route PCBs
Credits : jjennings089. |
Name : CDROM. Label designed for Gamer's Cartridge PCB Rev 3.3 and Rev 3.3 (a). Credits : Thales Peres. |
Name : Deza_Black. Label for Dezaemon 2 fans
Credits : beebaraka (artwork) and Dezaemon DB (editing). |
Name : Deza_White. Label for Dezaemon 2 fans
Credits : beebaraka (artwork) and Dezaemon DB (editing). |
Name : PCB2. Label designed for Gamer's Cartridge PCB Rev 3.3 and Rev 3.3 (a). |
Name : USB. Label designed for USB dev cart. |
Name : USB_BW. Label designed for USB dev cart. |
Name : Rev 3.1. Label designed for Gamer's Cartridge PCB Rev 3.1. |
What label look like after being printed and cut. |
Want to print a label for your cartridge ?
No problem : please use the ready-to-print (A4 size) image below
| labels_deza_20170317.pdf (6 MB)
(PNG, 7 MB)
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Dezaemon 2 labels in a single A4 page |
| labels_20160728.pdf (3 MB) (PNG, 8 MB) | All other labels above in a single A4 page |
Q: What are the steps to process the ordering of a Gamer's Cartridge ?
A: Here are the steps to order a Gamer's Cartridge :
You > Request to purchase one cartridge via my homepage.
Me > Confirm (or eventually infirm) that cartridge is in stock, write about its price, payment method and disclaimer, ask where it should be sent etc.
You > Verify the points above and eventually confirm the order and inform me about your shipping address.
Me > Prepare the shipping form and request for payment when the cartridge is ready to be sent.
You > Process the payment.
Me > Send the cartridge and inform you about its postal tracking number.
Q: What is the difference between Gamer's Cartridge and USB dev cart ?
A: USB dev cart allows fast USB transfer between Saturn and PC and also plays CD-R games : it's useful for Saturn homebrew software developers, not very useful for other people.
Gamer's Cartridge is a XL-sized memory cartridge using SD card which also plays CD-R games.
If you want to have fun in playing Saturn games (especially the ones using backup memory cartridge such as RPGs, Dezaemon 2, etc.), then Gamer's Cartridge is the best choice for you.
If want to play Saturn games, and occasionally make some small homebrew programs, Gamer's Cartridge choice is still OK since it allows to execute homebrew programs from SD card.
If you want to do intensive Saturn game/application development, with large programs and data files, gdb usage, etc, then you may prefer USB dev cart.
Q: Can I play official/backup Saturn games when using the USB dev cart ?
A: Yes, Pseudo Saturn Kai allows this.
Q: My cartridge doesn't works !
A: Please contact me in order to describe precisely what's wrong with your cartridge.
If your cart can be repaired, all the shipping fees, as well as the money needed to purchase replacement ICs are at your charge.
(Note : each cartridges are tested before shipping.)
Q: Can you discount your carts ?
Q: PCB costs x $ from that manufacturer, ICs cost y $ from that seller, so how about selling your cart at x + y $ ?
A: Short answer : I. don't. discount.
Detailed answer : x + y is parts/material costs. You forgot to add the following items in cartridge cost :
- Shipping costs from PCB manufacturer and ICs salers.
- Risks taken when producing several carts at once (if I make 10 PCBs and sell only 3, what should I do with the remaining 7 ones ?)
- Time taken to solder ICs, to flash firmware(s), to test cartridge.
- Tools and consumables items cost : soldering flux, tin, soldering iron, etc, etc.
- Time spent in designing this homepage, costs for hosting it.
- Time spent in desigining cartridge PCBs.
- Time spent in developing cartridge firmware.
Q: I want to make a custom cartridge ! Are you ready to listen to my requirements and specifications ?
A: NO. Because I do Saturn things for fun during my spare time.
Q: Where are the tools in order to use USB dev cart under Linux ?
A: There are several tools available for linux users :
- ssload tool from libyaul, by mrkotfw.
- Saturn USB dev tool, by Razor85.
- ftx utility, by antime.
Q: When using Gamer's Cartridge, does using an extra large SD card will provide more free room for memory cartridge ?
A: No : this won't change anything, so using a reasonably sized SD card is OK
The reason about this limitation is that showing SD card whole capacity to games may cause compatibility issues regarding digits to display, or when calculating free remaining size, etc. As a countermeasure, Gamer's Cartridge is shown with contents similar to official memory cartridge, but with enough remaining space to make all games happy when verifying if cartridge have enough free room to store their saves.
Q: Does Gamer's Cartridge have limitation regarding saves count or size or anything else ?
A: As long as there is free space on SD card, enough remaining size in backup memory cartridge is show to game, so in the facts, size limitation shouldn't cause problems.
On the other side, save data count is limited to 400. This is inherent to Gamer's Cartridge implementation and is set to this value in order to avoid performance degration when accessing memory cartridge.
Please note however that it is possible to archive save data with Save Data Dump feature, which isn't affected with this count limitation. So this limitation should not be a problem for a normal usage of Gamer's Cartridge.
Q: Is there a FAQ regarding Pseudo Saturn Kai ?
A: Yes, it is available on its own page.
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