Phase by Pixelpaw Labs is a modular mouse controller that detaches magnetically into a two-handed game controller, giving gamers one device in two forms.

Four years of prototyping separate the first sketch of Phase from the product that Pixelpaw Labs opened for pre-orders in March 2026. That timeline reflects just how difficult the engineering challenge actually was: build a device that functions as a precision desktop mouse and transforms, without tools or connectors, into a split handheld controller the moment a user lifts it off the desk. The result is a modular mouse controller housed in matte anti-slip ABS with a combined footprint of 119 × 82 × 43 mm, finished in a dark shell with multi-color status LEDs that indicate battery level and pairing state at a glance.

How the Modular Mouse Controller Works

Phase splits along a magnetic seam running down the center of its body. In mouse mode it operates at up to 16,000 DPI with a 1000 Hz polling rate, driven by a 32-bit ARM core and a high-precision optical sensor — specs that sit comfortably alongside dedicated gaming mice. In controller mode the two halves separate into left and right grip units, each fitted with mechanical tactile switches and a capacitive touch scroll surface with glide support. Up to 18 buttons become fully programmable via the Pixelplay companion app. The phone grip attachment, which ships in the box, accommodates most phones with a case attached, sliding into place along the right half's outer rail — a detail visible in product photography as a slim aluminum-toned bracket sitting flush against the grip surface.

Phase in Controller Mode

Phase splits along a magnetic seam into two independent grip units, transforming the modular mouse controller into a handheld gamepad that works with phones, tablets, and PCs.

Connectivity covers Bluetooth LE and a 2.4 GHz dongle, with support for up to three paired devices and a wireless range of 10 meters. A 500 mAh lithium-ion cell delivers up to 72 hours of combined use on a single charge via USB-C. The modular mouse controller weighs approximately 120 grams in assembled form, a figure the team notes may come down slightly before mass production begins.

A Modular Mouse Controller Four Years in Development

Pixelpaw Labs traces Phase back to January 2022, when a single designer began exploring whether one device could replace a mouse, a game controller, and a mobile gamepad simultaneously. A functional prototype confirmed the concept by October 2023. The company was formally incorporated in March 2024, and by August of that year engineering validation testing had begun on multiple prototype builds. A patent application covering the modular design was filed in October 2024. Early user testing with a small group of gamers followed in February 2025, driving refinements to grip geometry and button placement before industrial design was locked in May 2025.

The Kickstarter campaign is scheduled for June 2026, with mass production targeted for November 2026 and shipping to backers planned for December 2026 through January 2027. For designers and hardware enthusiasts tracking how input devices are evolving alongside hybrid work and play setups, Phase is a close study in how ergonomic and technical constraints shape every visible detail — from the split line that doubles as a design seam to the matte black surface chosen for grip rather than aesthetics. The modular mouse controller represents a considered bet that the gap between desktop precision and handheld play is finally worth closing in hardware.