Thea🇨🇦22 May 2026

My previous trackballs were the CST L-Trac and the Slimblade. This thing is like a new generational leap in trackballs. I am very satisfied. I went with the following configuration: - Pastel blue case - High performance sensors - No ball (purchased LZYDD 52mm trackball and some snooker balls, trying to fix the tracking on the snooker balls…) - Huano white switches - Rexroth BTU - Dongle - Pink marble extra keycaps - No cable - Yes soldering ---- Overall, I'm super impressed. I'll start with the "could be improved": 1. I ordered extra key caps, but they didn't include extra magnets. I decided to purchase enough magnets off Amazon (2 x 4 mm button magnets) to complete my set, and it kind of makes me want to print additional key caps in other colors. 2. The installation instructions could be made clearer, maybe by relying less on text, more on bullet points, more on gifs and stills. 3. The base and encoders only come in black and I wish we weren't limit to that. 4. The manufacturer that prints the case and buttons has limited colour selection 😛 5. I wish the sensors were more ball agnostic, but alas. 6. A compressed/printable keymap to get familiarized with the defaults would be stellar. The great: 1. Really clever design, I was so impressed every time that the installation had something that made my brain fold new creases. Really pleasing engineering work. 2. The soldering job was perfect and really appreciated. 3. Upgrading firmware by dropping a file and configuring the trackball through the web interface is really, really slick. ---- The trackball on the BTUs is super smooth, almost shockingly so, and I'm not sure exactly how I want to use it (e.g. smoothing? Maybe not necessary as I can always throw the ball across the screen) The clicks are really satisfying. The magnet system for the key caps is a little queer but everything works well and feels good, so I can't really complain. When I had questions on Discord, people were really fast to answer, including Artem/Efog. Shipping was relatively fast to Canada, assembly took me around 90 minutes with help from my toddler. Software configuration and mucking about took another day to get things working exactly how I like. Twist scroll has never been smoother. Drag scroll is really nice for horizontal scrolling from the trackball (though my Macbook doesn't handle the drag inputs all that well, it's much nicer on Linux/Windows. Maybe this is fixable via LinearMouse/BetterMouse.) The encoders feel nice and deliver a nice subtly tactile and auditory click. The default functionality for volume and cycling browser tabs is 👌 All in all, this is a really lovely and impressive device, I think everyone should try one at least once, and I look forward to seeing further iterations on the design. It's clearly made with care and love, and I don't think I'll be satisfied stopping at just one 🙃

Maba_Kalox🇱🇻20 May 2026

Trackball is amazing, I had no previous experience, but already can use it for daily tasks, and it feels cool. Also Artem is VERY customer oriented, and ready to help in case of any issues.

Jaydee🇸🇬20 May 2026

Almost 8 months in with the endgame Loved it as much as the day I got it Efog created an amazing device and a very very satisfied customer here Caveat is it requires some fiddling to feel right For those in doubt, just know there is life with, and life without endgame (Just do it)

compsoter🇦🇺13 May 2026

I got the very first version of the Endgame Trackball when Efog initially announced it and promptly destroyed the first two sensors when I first tried to assemble it, which is I guess the first thing I can say about the trackball; you really do need a decent amount of experience soldering to make it. I'm unlucky enough to have an unsteady hand and not enough brain cells to comprehend a sentence, so it ended up taking about a year for me to complete this project. A bit of a spoiler alert for the rest of the review; it broke on me. I got the 55mm ball and BOTSCH BTU's, and contrary to what people say, it's not really that loud. However, it is still audible, so if you're planning on using it in quiet rooms or the library, be prepared for semi-dirty looks your way. For the time that I had it usable, it was brilliant compared to the other trackballs I had used (namely the Kensington Orbit Wireless). It feels like swimming with a stretchy rashay on compared to nothing at all (it's a bit of a strange analogy, I know); it feels so so much better, and you're no longer focused on the trackball and how its running and if you need to clean it and if I need to lube it and if I do how I'm gonna get the lube off my fingers. However, I do still prefer the form factor of the Kensington; the box like shape makes me have to raise my wrist a bit higher than I'd like (which can be alleviated with the wrist rests that Efog also sells insert shameless plug), but it was manageable after I got used to it (and I do just quite enjoy the Kensington's shape). The backside buttons were uncomfortable for me to press the way I used the trackball (palm firmly glued to the table), but I never really ended up needing to use them. I must've bent the left click button whilst assembling it (i.e. putting in the magnets) and it ended up being permanently damaged. For a while, it was really nice because I didn't have to click as hard, but it eventually broke when a "friend" did a dickhead thing and snatched it off of me; part of the main shell connecting to the button face had snapped off. This is not to say the printing quality is not good; it is very good; it's just to say that the initial run's button design was a little flawed. I'll have to see if the shell update kit fixes that. To really sum up this ramble; the Endgame Trackball is probably the best hobbyist trackball you can get, and soundly trounces commercial options as well. Solid 4.5/5 to be honest.

Yury🇵🇱04 May 2026

I received the device as a gift about three months ago :) The first thing I can say is that it’s a piece of DIY art :) A fully customizable and repairable trackball with excellent support from the creator. I recommend getting it with Rexroth bearings right away — the smoothness of the movement is incredible (before this, I had a Slimblade PRO). Pros: * one of a kind :) * software * smooth movement * quick switching between Bluetooth and wired modes * battery life (I didn’t measure exactly, but I think it lasts around 3 weeks) * repairability Cons: * not all buttons are comfortable to press; some only work well when pressed in specific spots that aren’t very convenient for me * there’s an issue with USB-C to USB-C connection; for some reason it only works with USB-A to USB-C