Category Archives: NGPC Flash Cart

Wonderswan Flash Masta Cartridges Back In Stock – Shipping Internationally!

We have just listed a new batch of WS Flash Masta cartridges! These have been very popular, and they sell out quickly when we list them. This time we have tried to make a larger batch, so I hope that those of you that have been emailing me asking for one will get one this round!

I know that some of you are wanting to purchase a Wonderswan flash cart AND a Neo Geo Pocket flash cart. As an added incentive, we’ll give you $10 off if you purchase them together! To get $10 off of your order when you purchase a Neo Pocket Flash Masta WITH your WS Flash Masta, please use the following coupon.

Coupon Code: FM_WS_PLUS_NGPC_10

IMAGE: Batch Of Wonderswan Flash Masta Cartridges
Most of these shells will have original stickers still on them. We have yet to get “WS Flash Masta” stickers produced, and we don’t want to delay cartridges just for stickers.

We are shipping these internationally! If you want to know your options and costs, please add an item to your cart and start the checkout process to see what is available for your country.

COVID had really messed up shipping for quite a while, but, at this point, I think things are starting to get back on track. If you’re purchasing a flash cart from us and having it shipped overseas, my suggestion would be to choose the First Class option. It may take about 4 weeks to arrive (depending on the destination), but the added cost of Priority Mail doesn’t seem to improve that very much at the moment. Transit times do seem to be getting better, lately, though.


We also suggest that you check out WS Flash Masta forum thread about this WS Flash Masta v5.1 cartridge if you want any further information or have questions.

Black Friday: Flash Masta WS Available & Discounted Neo Pocket FM

On Friday, we plan to post 50 PRESALE WonderSwan Flash Masta carts for sale. Unfortunately, I can’t automate this on the website, so it will just be posted whenever I wake up and can get online on Friday morning after a big Thankgiving Thursday. That could be around 9AM Central Time. We now have all the parts to assemble these, so once the 50 are sold, we will get to work assembling them and shipping them out.

Check on Friday morning.

We will also be offering 10% off of our Neo Pocket Flash Masta all weekend (Friday through Monday).

Happy Thanksgiving!

Neo Pocket Flash Masta In Stock, WS Coming Soon

We now have 20 Neo Pocket Flash Masta units in stock and ready to ship. In the past, we have made these in larger batches, but we are also very busy with our Freeplay Zero/CM3 project (think Raspberry Pi in a GBA-style shell) lately. There isn’t really a lot to report about the NGPC flash carts other than I usually tell people to sign up for post notification emails, so when we have something in stock they will get notified.

Our other news here is that we now have all the parts in stock to make a new batch of WS Flash Masta USB cartridges. We have the parts to make 40+ of these carts, and we will be working on them this week. Even though we have the parts to build 40+ we may build/release these in smaller batches, because they do take a fair bit of effort to assemble, burn, test, etc. I don’t know when they will be ready, but I hope it will be soon.

If you want one of these WonderSwan cartridges, please sign up for post notification emails at We do not keep a waiting list, so this is our main way to get the word out when there are some ready for purchase.

Tell Your Friends, 10% Off For The Holidays

Our “Cyber Week” promotion went well, and we have been getting into the holiday spirit lately, so we decided to run a holiday promotion for the rest of the year (through new years day). We currently have the Neo Pocket Flash Masta cartridges ready to ship.

This is a 10% off coupon that you can apply at checkout for ten percent off your Neo Pocket Flash Masta order.


I know that many of you have been asking about the WonderSwan carts lately. We are working on another small batch (10-15 cartridges) of WS Flash Masta carts, but they do take quite a bit more effort than the Neo Pocket Flash Masta carts take. I’m sorry to say that my guess is that we won’t have enough time to get them made before the new year, but there’s a chance.

In other news, our Freeplay Zero DIY Kits are currently in stock, and the circuit boards for our Freeplay CM3 DIY Kits are being shipped to us soon. That project is taking the vast majority of our time lately, because we have Kickstarter (and other presale) backers waiting for their rewards.

We really appreciate all of you that follow along here. We’d like to wish you a Merry Christmas and/or just a great holiday season.

Neo Pocket Flash Masta Cyber Week Sale

We just got some new stock of the Neo Pocket Flash Masta cartridges. We had wanted to do a Cyber Monday sale, but we had to wait until we had these additional cartridges. Well that just happened!

Now we can offer the celebratory sale. I know it’s already a bit late in the week, so we will run this 10% off coupon through the weekend. You can apply it at checkout for ten percent off your order.


Thank you all for following our project, and have a great holiday season. We really do appreciate you!

In Stock Again – Neo Pocket Flash Masta

We have just made a small batch of Neo Pocket Flash Masta cartridges. We will try to be keeping these in stock through the rest of the year, but (of course) that will depend on demand.

At the moment, we have 13 cartridges that we have assembled by hand. We have most of the parts to make another small batch or two, and we are also working on getting another larger batch manufactured/assembled for us.

I hope we can keep these in stock for a while.

The cartridge shells may be a different story. As you may know, we cut these from sacrificial game cartridges. They are getting more difficult/expensive to obtain. At least we have the 3D Printable Neo Pocket Flash Masta shell available out there, now.

Neo Pocket Carts In Stock (Limited Supply)

We have been getting emails from plenty of people lately that are wondering when we will have Neo Pocket Flash Masta carts back in stock. Well, we don’t have a full batch in stock, but we did spend some time testing & refurbishing some cartridges that didn’t pass our prior inspections. There is a very limited supply of these refurbished Neo Pocket Flash Masta cartridges, but I wanted to post about it so everyone that may be waiting for a cartridge would get notified.

UPDATE: These have sold quite quickly. Please sign up for email updates if you want to get notified when we post about the next batch.

Otherwise, we have been rather swamped with our Freeplay Zero and Freeplay CM3 production. That is going rather well, but it’s time consuming. If you want to keep up with that, please sign up for our Freeplaytech email Newsletter.

Kickstarter Launch & Neo Pocket Flash Masta NGPC 3D Printable Cart Shell

Freeplaytech Kickstarter

Freeplaytech Kickstarter

If you didn’t notice, we have launched a new product line called Freeplaytech. Under that, we are using Kickstarter to produce two products: Freeplay Zero and Freeplay CM3.

Head Over To The Kickstarter Campaign

The Freeplay Zero (which was previously called Game Pie Advance) is a DIY kit that we are producing to allow you to pair with your own Raspberry Pi Zero (or Zero W) and make a customized handheld gaming console.

The Freeplay CM3 is a DIY kit that comes with the processing power of the Raspberry Pi 3 built in allowing you to build a customized handheld gaming console.

NGPC Neo Pocket Flash Masta 3D Printable Cartridge Shell

NGPC Neo Pocket Flash Masta 3D Printable Cartridge Shell

We have also had some work done on a NGPC cartridge shell that you can 3D print. I don’t know if this is the final design or not. I had a purple version printed, and it needed a couple minor tweaks to the lid. Since implementing those tweaks, I have not yet reprinted the lid. I thought some of you guys might want to try it out.

If you do try it, let us know in the comments. If you remix this, please comment here and post your remix.

For example, one thing you may want to edit is the “lip” of the lid where you grab on to pull the cartridge out. That makes printing a bit more difficult, because you need to support the print. You may want to flatten that out and just add a slit for your fingernails to grab onto. A flat lid would be easier to print directly on the print table.

NGPC Neo Geo Pocket Flash Masta 3D Printable Cartridge Shell via Thingiverse

Flash Masta Now Open Source Software

The Flash Masta Desktop application is now open source. This is the desktop application that is used to interface with the Neo Pocket Flash Masta and WS Flash Masta cartridges via USB.

I just feel like I don’t have the time to properly maintain this code any longer, so it should finally be released to the community. It should easily compile under Windows, macOS, and Linux. This is the source code to the application found on our downloads page, and it has been released under the GNU General Public License v3.0.

To celebrate this momentous occasion, we are offering 10% off of Neo Pocket Flash Masta cartridge orders for the next 10 days. Just use coupon code open-source-10 (expired) to get your cheap flash cartridge. As always, we would love it if you would share this news on Twitter, FB, forums, etc. Let us know if you do. The coupon should be good through the end of March.

You can find the source code here, on GitHub.