

From the brand

TinyCircuits
Started in 2011 – TinyCircuits designs and manufactures incredible, tiny electronic working miniature products, all made in the USA.
TinyCircuits Store
How did we get our start?
Based out of a 100 year old rubber factory in the heart of Akron, Ohio, USA, TinyCircuits launched the TinyDuino platform on Kickstarter in 2012, which allowed people all ages and skill levels engage with electronics.
What makes our products unique?
All of our products are miniature working electronics, are incredibly fun and engaging.
Why do we love what we do?
We love creating products that spark the imagination of our customers, and that we ourselves love creating. We build all our own products ourselves in our Akron, Ohio factory, creating jobs for our community.
PLAY ANYTIME, ANYWHERE – Ultra‑mini keychain game console with 6 tactile controls and OLED display ready with 5 built‑in retro games; portable nostalgia in your pocket.
EASY PROGRAMMING – Learn coding using MicroPython via free browser editor; no software install required, perfect for beginners and educators.
ADD, UPLOAD & SHARE – Expand the fun: load new games, animator drawings, or animations via USB; join the vibrant Thumby community.
MULTIPLAYER FUN WITH FRIENDS – Link two Thumby consoles (cable sold separately) for simple, shared gameplay like Pong or Tennis.
RECHARGEABLE & BUILT TO LAST – Includes a 40 mAh Li‑Po battery for around 2 h of gameplay; charges with any micro‑USB cable, durable polycarbonate build.
13 reviews for TinyCircuits | Thumby Programmable Game Console Keychain – Retro Gaming Fun Mini-Console, STEM Learning, USB Rechargeable, 5 Preloaded Games (Clear)
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$29.95


Jaz🐝 –
Tiny, functional, interesting! I Love her, but she wont charge 🫠
✨️UPDATE: Got the replacement, and she works like a charm! 🎮❤️ +2 stars!(Original review Below)1. Size: let’s be honest. If you’re buying this product, chances are it’s because you want something miniature, novel, and functional. The thumby does exactly that….and very well!2. Appeal: personally i am a huge fan of miniature things, and tech. The inner nerd went crazy when Thumby introduced a miniature piece of tech…. and you can program your own games and imagery, also?! Love that.3. Quality: the little device may be a challenge to control and use due to its size, but there is no lack of quality in the feeling or function. The keys are satisfyingly clicky, the material feels nice, the special black-grey display adds a subtle hint of depth to the retro games, and the tiny sound feedback that it produces gives you just enough to emulate a nice, retro, portable game console.4. Downsides: first and foremost the packaging is cute and minimal, much like you would find on any novelty item. There is basic information such as what games come pre-loaded on the device and where you can go to download more games or program your thumby. The biggest miss here is that there are no instructions or user manual. I had to google the information for charging the device, and read through the website’s FAQ section. (Maybe include a QR code or link to an online user manual?)Another problem, which hopefully is just device specific; mine wont charge… whatsoever. Only way I can use it is if it’s plugged in to a power source. Started an exchange for mine, lets see how the replacement does! (-2 stars for this alone)Overall: i absolutely love the concept of this little device, its so small it takes up less space than a flash drive, and i loooove that you can program your own functions or even select from other pre-made games and functions that other users have created.
Donald Becker –
Fun lil doo-dad
This thing is too cool, very fun keychain candy, works great and the battery has lasted quite a while without charging.
Krzysztof Czarnecki –
Absurdly small, a lot of fun
It is the size of a small flash drive and be ause of that the D-pad can be a bit challenging to use, you have to develop a technique. And there is a quite a few games for it, the best ones I have found so far are Guiguitte (tribute), OutThumb and Gravity Challenge. There’s also sudoku,but too small to see. You can of course write your own, if you are so inclined, there’s a whole browser based SDK for it. And it does have sound output, just pretty quiet. But hey, think how cool you’d have been as a kid in the 90s if you brought something like that to school. You need to install “battery” to be able to check the battery state, as the default UI doesn’t have a way to check it.Also it literally has a smaller screen than my flashlight.
Douglas Jansen –
Good product and great customer service!
I’ve had two Thumby’s for a little over a year now. One of them I keep on my keychain and the other in my desk at work. The screen for the one on my keychain recently stopped working. Possibly due to it being jostled around or getting wet while attached. I reached out to their customer support to see if there was a warranty or a way to fix it and within minutes they emailed me back saying they would send a replacement; no questions asked! If that’s not great customer service, I don’t know what is. It only made me want to buy more!Overall, this little thing is extremely well made and, for the most part, can hold up on a keychain, assuming you’re not getting it wet. I love the fact that you can download other games to it through their website, and their discord has an active community if you were interested in making your own games for it and needed some help. They have a Thumby Color launching on Kickstarter soon as well, so I highly recommend checking it out if you want a little more “umph!” with your Thumby.
gabe –
Fun
It’s great. It meant all of my expectations, fun to play
Rebecca M. –
This thing is adorable!
If you love tiny things, computer programming, and the original Game Boy, this is the toy for you! I bought one for myself, for my birthday, and I am impressed. (I also recommend picking up a pair of highly magnifying reading glasses, by the way.) I went immediately to the website and downloaded a bunch more tiny games onto the Thumby, which was click-button easy. The tiny games are playable and the screen is quite bright and crisp.The only downsides are:1. It doesn’t come with a data cable, and not every micro USB cable allows data transfer, so I had to try a couple of cables I had on hand before finding one which let me link to the Thumby website via my Windows computer.2. It doesn’t come with a “keychain” — it’s a cord to a jewelry-sized lobster claw clasp. Don’t expect it to work as a durable keychain, though it can be hooked onto a carabiner or such if you really want to put it with keys.3. Needs magnification to be readily visible to my eyes, but then I’m getting on in years and my eyes aren’t as good as they used to be.Everything else about this little gadget is wonderful! You don’t need to be a computer programmer to enjoy it, though the FAQ on their website is useful no matter your level of experience. Makes a great gift for anyone who loves miniature gadgets.
Luna –
fun, cool, and cute
got two of these as gifts for people and both of them loved it! its so cute and fun, you can do a whole lot on and with it and they love to tinker with it. the item is obviously small, so if you have bigger hands the buttons may be a bit hard to press.
Finn Hypatos –
Fun little toy but impossible to use
I love the idea behind Thumby – it’s super cool that you can make small games with it quickly. However, the device itself is simply too outrageously small to be useful. Gaming on it is impossible – even for those with small hands.
Jennifer Stonehouse –
The rope it comes with went loose a few days after buying it and I lost it, terrible that they’d ship it out with that loose of a knot with that weak of a condition
山田 雄一 –
想像以上に小さく無くしそうなのでパッケージに入れたままです。所有欲が満たされました。
Lena Kleinschmidt –
Really fun to play with, works well, seems good quality.
Mohamed Aref –
My son id enjpying it for 3rd year on weekly uses
SRN –
I collect keychains, and this is by far the coolest one yet. The fact that you can connect this to your computer to add your own games is incredible for a tiny keychain. It’s also surprisingly durable too, as I tested it by putting all my weight on it, and it still works! (Don’t actually try this yourself as these are expensive and you may not be so lucky) this may look like it’s impossible to see the screen, but if you try, you can easily use this. This is the greatest mini game console I’ve ever used.