Valve’s upcoming Steam Machine hasn’t launched yet, but fans are already customizing it. A Portal-inspired 3D-printed sleeve called the “Companion Gabecube” is drawing attention online. It wraps the console in a glowing tribute to the iconic Companion Cube and the best part? It’s free.

Companion Gabecube wraps Steam Machine in heart-lit nostalgia

MakerWorld user Ellanas designed the Gabecube as a shell that slides over the Steam Machine. It features LED heart panels, corner accents, and airflow cutouts in the rear. The design blends Portal’s style with PC modding in a way that’s both playful and functional.

The case prints in multiple PETG parts and works best with Bambu Lab printers. Once sizing tests finish, Ellanas plans to release the files for free. Unlike Dbrand’s licensed skin, set to arrive in 2026, this mod skips the wait and the price tag.

The Steam Machine mod community is heating up

Fan excitement around Valve’s new console is already spawning creative hardware mods. On Reddit, the Gabecube post gained thousands of upvotes within days. While most responses praised the design, some users asked about cooling. The creator replied that the case includes open sides and a vented rear to allow airflow. Thermal performance will depend on the build materials and printer settings.

Here’s what the Companion Gabecube offers:

• LED-ready heart panels and corner details
• Multi-part PETG construction
• Full venting along the sides and rear
• Portal-inspired look tailored for the Steam Machine
• Free STL file downloads after final fitment

Companion Gabecube kicks off DIY modding before launch day

Valve hasn’t released the Steam Machine yet, but it’s already inspiring mods. Projects like the Gabecube show how eager the community is to shape the hardware themselves. If this trend keeps growing, Valve’s console might launch into a full-blown DIY ecosystem no official accessories required.