3D Printable WS Flash Masta Shell for Wonderswan

Hipcat has just released his first version of a shell for our WS Flash Masta cartridge at both Thingiverse and MyMiniFactory. The links to the designs follow.

We are very excited to have this as an option for anyone that wants to print their own cartridge shell. We are also looking into how we can produce these in enough quantities to satisfy our customers. The same is true for the Neo Pocket Flash Masta cartridges.



Cyber Monday WS Flash Masta Carts For Sale

This is really very last-minute.  We didn’t plan on listing WS Flash Masta carts today, but, all of a sudden, we decided to do a little Cyber Monday surprise.  Instead of waiting for more parts to arrive to complete a full batch, we’re listing what we have ready, now, today.


SOLD OUT Buy Now (Limited Supply) WS Flash Masta Cartridges

I know this isn’t some crazy discount. It’s the same price as we’ve been selling them for previously. We just thought that listing a half-batch of WS flash carts would make the day a bit more exciting.

If you are looking for an added bonus, we can say this. By the time these ship to their new homes, we expect (but can’t yet promise) there to be a 3D-Printable shell available. I’ll add some screenshots of that work-in-progress. Since this post is super last-minute, I’m not even sure if I’m supposed to be publicizing this tidbit of info, yet. If this paragraph and the photos disappear, now you know why, but the point is that you could (in theory) get the PCB-only option for the WS Flash Masta and print your own shell.

WonderSwan Flash Masta – Another Batch Ready To Ship

WS Flash Masta Latest Batch

We have just completed another batch of WS Flash Masta cartridges! As I mentioned last time, these have been very popular, and they sell out quickly when we list them. We are trying to make batches more frequently and in larger quantities. Last time they sold out in a matter of hours, so I hope these last a bit longer. There’s also a coupon code below, if you also want a Neo Geo Pocket flash cart.

We just added a new option and changed the pricing to reflect that. We now offer the cartridge as a PCB only, pre-installed into a shell, and pre-installed with a dust cover.

Note that the “Circuit Board Only” option will need to be installed into a plastic shell. You can use one from another game you already own, but you’ll need to shave/cut some of the plastic (for example to make an opening for the USB and some other parts).

We ran this same add-a-NGPC-cart promotion last time, so I’ll just copy/paste that coupon code and text here.

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

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.

Wonderswan Flash Cart v5.1 First Production Run

We have our first production run of WS Flash Masta v5.1 carts ready. Our first limited run of carts was only released for US customers. That has gone well, so we are now offering these for worldwide shipment. At the moment, we only have 30 carts available, but we will be making more.

Also, to celebrate, we are offering a coupon code to get our Wonderswan Headphone Adapter for half price when you also purchase a WS Flash Masta. Put both in your cart and then apply the following coupon.


Please read our previous post (if you haven’t already) to get a bit more info about this v5.1 Wonderswan flash cart.

WS Flash Masta v5.1 / Looking For 10 More Early Adopters

We are getting close to calling this version ready for full release. We would just like to have some more people play with it a bit before we call it good.

If you’d like to be an early adopter AND you’re in the USA, please use this button to get yours before the official release. The 10 units have been sold. We will be working to validate these units and then move on to full production (assuming things go as expected).

We are limiting this first batch to USA purchases, just in case we need to recall them. We definitely do not expect to have any problems, but we just want to limit the impact in case we do need to fix something. So far, we have a handful of these in testing, and we haven’t heard much negative, yet.

Don’t forget to add a Wonderswan headphone adapter to your order, if you need one.

If you are interested in compatibility, so far we haven’t found anything that worked on the previous v4.4 cartridge that fails on this new v5.1. You can read a bit more about that on our WS Flash Masta v5.1 forum thread. https://forum.freeplaytech.com/showthread.php?tid=5139

For users, this new v5.1 should work the same as the v4.4. It doesn’t add any new playability features. Here are the new benefits:

  • Cartridge Shell – The cartridge circuitry now fits inside of a modified WS cartridge shell.
  • Battery – The cartridge no longer relies on a battery to store savegame data, so you won’t ever need to replace a dying/leaking battery.
  • Manufacturable – The previous versions of the cartridge were troublesome to source parts for and difficult to assemble. This v5.1 version should be much easier to keep in stock, so we don’t have to trickle out tiny batches of carts sporadically and annoy people that miss the opportunity to buy.

WS Flash Masta Carts Listed Now (PRESALE)


Our presale of the WS Flash Masta cartridge for the WonderSwan has started. We have stock to assemble and ship 50 cartridge boards. That’s what we are listing today. Once they are sold, we will assemble and ship them out. I would expect to have them all shipped out by mid December.

Please read the product page at https://www.flashmasta.com/product/ws-flash-masta-usb-cartridge-for-wonderswan/ to educate yourself about this product.

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 https://www.flashmasta.com/product/neo-pocket-flash-masta-usb-32mbit/ on Friday morning.

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

Happy Thanksgiving!

WS Flash Masta USB (Cartridge for WonderSwan) In Stock Now

I know that we don’t post news a whole lot, but I think that this is the news that a lot of you have been waiting for. I don’t know how many of you are waiting to hear that the WS Flash Masta cart is in stock, but I do know that there are 35 of them ready to ship (as of my posting this).

UPDATE: They have already sold out in 2 hours.

These have sold out very quickly in the past, so get one while it’s available. We do plan to make another similar-sized batch sometime in the near future, but I don’t know how soon that might be. These things end up going a LOT slower than I ever anticipate.

I am trying to list these (and post this news) at a time when our European friends can purchase them, too. Timing this is a bit tricky, since we have had people all over the world ask about them. I don’t want someone to wake up in the morning and realize that they missed it, but I’m sure that would be inevitable no matter when we post this. I’m hoping that the timing here will fit well for most people that are interested.

I feel a bit odd posting short news items, since I don’t post very often. I guess I can talk about the state of our other projects.

We continue to manufacture and sell the Neo Pocket Flash Masta cartridge. That’s something of a staple for us, now, I guess. Lately we also make those in small batches, but they are easier for us to obtain parts for and to assemble. We are low

Lately, our top projects are centered around the Freeplay Zero, Freeplay CM3, and other items associated with those handheld gaming systems. We recently made a new backlight brightness controller for them, and we’re working on another add-on board for the Freeplay CM3. Head over to freeplaytech.com if you want to check any of that stuff out.