Phone case! Bluetooth game controller. Play any emulator game!

Since my student days, I’ve been determined to create a phone case‑controller that feels just as good as a traditional gaming console controller. Those early prototypes, hand‑cut from ABS sheets, went through several iterations but repeatedly hit dead ends, leaving this idea tucked away in my sketchbook for years.

It wasn’t until the advent of 3D printing technology that this long‑abandoned concept was revived. While building a 3D model in Max, I implemented topology optimization for the first time. After numerous iterative versions, once the assembly passed fit‑and‑function testing perfectly,

this journey—from traditional craftsmanship to digital manufacturing—made me truly realize: when innovation meets 3D‑printed fabrication, even the smallest personal creation can shine with the brilliance of industrial design.

Classic gray phone case with built‑in game controller. Featuring a retro game‑pad design, with D‑pad and function buttons that recreate the tactile feel of a handheld console. Supports Bluetooth connectivity and can be detached from the case for standalone use. It’s both a drop‑proof protective case and a portable gaming controller, exuding vintage charm—a stylish yet practical accessory for mobile gamers.

You’ll need to source the Bluetooth controller module yourself by searching on Taobao under “Shanwan.”

Simply remove and reattach the controller’s circuit board.

There are magnets on both sides; make sure you install them correctly—don’t reverse the polarity.

The phone controller is detachable.