Since the announcement earlier this month that Portal would now be FREE in order to promote the upcoming Portal 2 on the Orange Box as well as the release of Portal for the Mac. Users have taken to the Steam Content Servers to download Portal over 1.5 million times.

Valve originally announced that Portal would be free to download until May 24th, in celebration of Steam’s port to the Mac which has been highly anticipated by gamers for years.

To download Portal while it’s still free, click here.