Portal is in development for the Nvidia Shield Android-based handheld gaming platform, Nvidia announced today.
According to an Nvidia blog post, the first-person puzzle game will arrive "soon" on the device.
"Nvidia has created a very powerful and unique device with Shield," said Valve marketing director Doug Lombardi. "Our companies have a strong history working together and we're looking forward to Portal's arrival on Shield."
Nvidia Shield, which includes a controller and an LCD screen, was released last July. By the end of last year, Nvidia added support for streaming PC games, hooking the device up to a TV and 1080p and 60 fps streaming. Games available on the device include Android mobile games as well as Assassin's Creed 4: Black Flag, Battlefield 4, BioShock Infinite, Crysis 3 and The Elder Scrolls 5: Skyrim. For more on the device, be sure to read and watch Polygon's hands-on preview.
Update: A representative from Nvidia told Polygon that the company is developing the Portal port internally.
"The game is a native Android port, and we're doing the development in-house at Nvidia," the representative said, "working to ensure Shield fans will receive an amazing experience when they play Portal on their devices."