A groundbreaking accessory is set to launch tomorrow alongside Valve's $99 Steam Controller, promising to turn smartphones into portable gaming hubs. Mechanism's Basegrip is the first mount specifically designed to attach the Steam Controller to a phone, according to the company's announcement.

“We’ve been working closely with Valve for months to ensure perfect compatibility from day one,” said Alex Chen, Mechanism’s head of product development. “This isn’t just a holder — it’s a bridge between PC gaming and mobile flexibility.”

What Is the Basegrip?

The Basegrip is a modular clamp that snaps onto the Steam Controller’s rear grips. It then locks into Mechanism’s existing phone mount, allowing players to stream PC games to their phone while using the controller.

Mechanism also confirmed the mount works with its other accessories, including hooks for hanging the controller on an IKEA Skadis pegboard or attaching it to desks, walls, or even backpacks.

Launch Timing and Pricing

The Steam Controller hits stores Monday, and Mechanism will release the Basegrip simultaneously. Valve provided early access to the controller’s design, giving Mechanism a head start over competitors.

Pricing for the Basegrip has not been disclosed, but Mechanism’s phone mount sells separately for $19.99. The company promises a bundled option soon.

Background

Valve designed the Steam Controller for both traditional gaming and the Steam Link app, which streams games from a PC to mobile devices. However, holding a controller while using a phone was awkward — until now.

Mechanism, known for niche mounting solutions (e.g., VR headset mounts), spotted the gap early. “We saw players using rubber bands and tape,” Chen noted. “Our solution is purpose-built.”

How It Works

The Basegrip uses a spring-loaded clip that secures to the controller’s hand bumps. A ball-joint on top rotates 360°, so players can angle the phone for landscape or portrait.

During testing, Mechanism ensured the mount doesn’t block the controller’s touchpads, bumpers, or USB-C port for charging. “We obsessed over ergonomics,” Chen added. “If you can’t reach the face buttons, the mount fails.”

What This Means

The Basegrip could make remote PC gaming genuinely portable. Instead of being tethered to a desk, gamers can play Cyberpunk 2077 or Baldur’s Gate 3 on their phone while commuting — using the same controller they use at home.

This also signals Valve’s willingness to support third-party hardware early, a departure from its cautious history. “Valve wants the Steam ecosystem everywhere,” said industry analyst Maya Torres. “This accessory removes a major friction point.”

Potential Drawbacks

• Phone heat: Streaming games can overheat phones; the mount may add insulation.
• Weight: A phone plus controller makes for a heavy handheld setup.

Mechanism says it will release a ventilated version later this year if demand justifies it.

The Bottom Line

The Basegrip may look like a niche gadget, but it could be the accessory that makes mobile PC streaming practical. For $99 plus the mount cost, gamers get a unified experience — no more awkward balancing acts.

“We’re not inventing gaming; we’re just making it easier to play anywhere,” Chen concluded.