“GameSir and Hyperkin Unite for a Game-Changing Modular Mobile Controller”

Two of the most popular controller brands are joining forces to introduce a mobile controller that you can customize to fit your gaming style. Hyperkin and GameSir have unveiled the X5 Alteron at CES 2026, a modular mobile controller that’s set to launch soon.

As a controller enthusiast, I find the debate between symmetrical and offset thumbsticks particularly intense in the mobile controller space. Smaller controllers can lead to thumb cramps with Xbox-style sticks, while a Steam Deck layout doesn’t always hit the mark.

That’s why the X5 Alteron has me genuinely excited. The ability to swap out modules and tailor the controller to your preferences is a significant advantage—similar to what makes the Victrix Pro BFG a top choice in the PC controller arena for years.

To top it off, the X5 Alteron will support cross-platform compatibility, allowing you to use it with phones, tablets, and as a controller for the Switch and Switch 2. This makes sense, especially since it includes retro modules that can transform it into a GameCube or N64-style pad for Nintendo Switch Online games, saving you from splurging on those expensive replica pads from Nintendo.

And there’s more! The X5 Alteron features two back paddles that resemble the highly tactile, magnetic paddles found on premium controllers like the DualSense Edge, rather than the standard buttons typically seen on GameSir’s offerings.

GameSir has also incorporated some design elements from the top mobile controller on the market, the GameSir G8 Galileo. With slightly longer grips than the Backbone One and more ergonomic, rounded handles, this controller should be comfortable for extended gaming sessions—a common shortcoming of many mobile controllers.

Everything about the Alteron seems designed to elevate the mobile gaming experience. It includes rumble motors for added immersion during on-the-go gaming and enhances the feel when using a Switch 2 in handheld mode. This may also contribute to a bit more heft than usual for mobile controllers, giving it a more premium feel.

You can adjust the height of the thumbsticks, a feature typically found in full-sized PC and Xbox controllers. The D-pad is interchangeable, and you can opt for a trackpad module like the one in the upcoming Steam controller or sharpen your skills with a fightpad module. Additionally, the Alteron boasts capacitive thumbsticks, which suggests they might function similarly to the gyro controls on the Steam Deck.

The only downside is the lack of a confirmed price and release date. “Coming soon” is a vague term, and CES often showcases projects still in development rather than imminent releases. For instance, the Hyperkin Competitor, their take on the DualSense, was revealed at CES last year and only recently became available. Let’s hope the X5 Alteron arrives sooner, as it has the potential to be one of the standout controllers of 2026.