The company is looking for people ”local to the Seattle/Bellevue area,” but they welcome anyone to fill out the survey in case of ”remote playtests in the future.” For now playtesting is strictly US only.
All you need do if you’re interested is fill in a single page Playtester Survey over on the official Valve company website.
”We’re looking for folks to come to Valve and playtest both released and unreleased versions of our games as well as play around with some of our hardware prototypes,” said Valve. ”We’re looking for people local to the Seattle/Bellevue area, but you’re welcome to fill out the survey no matter where you live as we may have plans for remote playtests in the future.”
As of right now the playtesting is strictly US only, but they’re ”looking to add international support in the future.”