Portal
Short description
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.
- Developer
- Valve
- Publisher
- Valve
- Release
- Wed, Oct 10, 2007
- Price
- $9.99
- Reviews
- 174,935
- Positive
- 99%
- Followers
- n/a
- Owners (estimated)
- 10M – 20M
- Concurrent players
- 638
- Genres
- Action
- Features
- Full controller support, Captions available, Camera Comfort, Custom Volume Controls, DualShock Controller Support, DualSense Controller Support, Save Anytime, Steam Input API Support, Stereo Sound, Subtitle Options, Surround Sound, Includes level editor, Includes Source SDK, Commentary available, Remote Play on Phone, Remote Play on Tablet
- Tags
Review count and SteamSpy's owner range agree well enough to narrow the estimate down to this band. Multiplied by $8.67, the average price these copies actually sold for — weighted from the price history rather than taken from the $9.99 launch price. That is 13% below list price on average. Before Steam's cut, VAT and refunds. How these numbers are calculated.
Waiting for Portal to get cheaper? Name your price and we will email you when it gets there.
Media
History
71 data points since Aug 10, 2026. Gaps mean nothing changed — the value carries forward.
The revenue curve is an estimate, not a measurement. It is the only calculated series here: each interval takes the review growth of that period, multiplies it by the sales-per-review factor and by the price actually charged at the time, and adds the result to the running total. That is why it climbs more slowly through discount periods than the review curve next to it. The last point is the same figure quoted above — gross, before Steam's cut, VAT and refunds. How these numbers are calculated.
The blurred area is the rest of the history. 323 further data points reach back to Oct 1, 2010 — your plan shows the last 90 days of it. How far each series in particular reaches is written on its own chart; not every one of them goes back that far. The shape in the blurred area is decoration, not data: the figures are not in this page at all. Plus unlocks the complete series.
Lowest recorded price: $0.99 on Jun 23, 2017.
Similar games that found an audience
Games sharing at least 3 of this title's leading tags, with enough reviews to have gone somewhere. Ranked by how much they overlap, not by how big they are. − missing and + extra mark the tags each one does not share with Portal. Studio counts the titles that developer has released — the closest thing to production scale that public data allows. It is not a budget, and nobody publishes those.
| Image | Name | Studio | Shared | Tag difference | Price | Reviews | Positive | Released | Revenue (estimated) |
|---|---|---|---|---|---|---|---|---|---|
|
ChromaGun | Pixel Maniacs 7 titles | 5 | − Sci-fi + Colorful | $12.99 | 305 | 76% | Tue, Feb 16, 2016 | $154k $68k – $1.1m |
|
The Crow's Eye | 3D2 Entertainment 2 titles | 5 | − Sci-fi + Story Rich | $9.99 | 127 | 72% | Mon, Mar 20, 2017 | $41k $18k – $715k |
|
The Talos Principle 2 | Croteam 23 titles | 4 | − 3D Platformer − Singleplayer + Story Rich + Philosophical | $39.99 | 12,724 | 95% | Thu, Nov 02, 2023 | $13.3m $6.8m – $13.3m |
|
Viewfinder | Sad Owl Studios first game | 4 | − 3D Platformer − Sci-fi + Abstract + Psychological | $7.49 70% best price ever |
12,246 | 94% | Tue, Jul 18, 2023 | $10.6m $5.2m – $10.6m |
|
Quantum Conundrum | Airtight Games 2 titles | 4 | − Singleplayer − Sci-fi + Physics + Comedy | $0.98 89% best price ever |
1,755 | 85% | Thu, Jun 21, 2012 | $607k $270k – $3.8m |
There are more like this. Your plan shows the 5 closest neighbours; Plus and Pro show up to 100 — enough to see the shape of a niche instead of a sample of it.