Not currently charting in Zing's Steam Top 100 — showing what Zing's own catalogue holds (refreshed 6 Nov 2026).
Portal
$9.99
Overwhelmingly Positive
(175,439 reviews)
Estimated owners (SteamSpy): 10000000 - 20000000
Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay.
