Portal
gameappid 400 · released Oct 10, 2007
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.
Price
$9.99
Lowest ever
$9.99
Players now
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24h peak
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All-time peak
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Reviews
99%of 199,073
Price history · US
A step series: the price held until it changed. Shaded spans were discounted. Points marked as carried forward are inferred from the last observation before the window, not measured inside it.
| Date | List price | Paid price | Discount | Inferred |
|---|---|---|---|---|
| Sep 11, 2026 | $9.99 | $9.99 | None | observed |
Lowest in window
$9.99
All-time low
$9.99
Discount periods
0
Observations
1
Confirmed
Sep 11, 2026
Every change in this window
| Date | List | Paid | Discount |
|---|---|---|---|
| Sep 11, 2026 | $9.99 | $9.99lowest ever |