Two prototype models of Razer's recently announces Project Valerie gaming laptop featuring three screens have been stolen at the CES tech show in Las Vegas, Razer says.

Razer said the laptops had gone missing from its booth at the tech show on Sunday.

The incident was being taken "very seriously", said chief executive Min-Liang Tan.

Razer is offering $25,000 for any "original information leading to the identification, arrest and conviction" of those allegedly involved in the crime.

"Our teams worked months on end to conceptualise and develop these units," Mr Tan said in a post on his official Facebook page.

"It is cheating, and cheating doesn't sit well with us. Anyone who would do this clearly isn't very smart."

Project Valerie is still a prototype and Razer has not yet published a possible release date or price. The concept device boasts three 4K screens and is said to be the first portable laptop of its kind.