X4: Foundations
Short description
X4: FOUNDATIONS brings our most sophisticated universe SIMULATION ever. Fly every ship, EXPLORE space or manage an empire; TRADE, FIGHT, BUILD and THINK carefully, while you embark on an epic journey. Experience tons of improvements with the massive 7.00 Update!
- Developer
- Egosoft
- Publisher
- Egosoft
- Release
- Fri, Nov 30, 2018
- Price
- $49.99
- Reviews
- 25,463
- Positive
- 79%
- Followers
- 158,955
- Owners (estimated)
- 1M – 2M
- Concurrent players
- 2,141
- Genres
- Action, Simulation, Strategy
- Features
- Full controller support, Steam Trading Cards, Steam Workshop, Adjustable Text Size, Camera Comfort, Color Alternatives, Custom Volume Controls, Playable without Timed Input, DualShock Controller Support, DualSense Controller Support, Save Anytime, Stereo Sound
- Tags
Review count and SteamSpy's owner range agree well enough to narrow the estimate down to this band. Multiplied by $44.51, the average price these copies actually sold for — weighted from the price history rather than taken from the $49.99 launch price. That is 11% below list price on average. Before Steam's cut, VAT and refunds. How these numbers are calculated.
Waiting for X4: Foundations to get cheaper? Name your price and we will email you when it gets there.
Media
History
84 data points since Jul 30, 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. 228 further data points reach back to Sep 1, 2017 — 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: $4.99 on Dec 18, 2025.
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 X4: Foundations. 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) |
|---|---|---|---|---|---|---|---|---|---|
|
Kerbal Space Program | Squad first game | 4 | − Economy − Flight + Physics + Science | $39.99 | 121,587 | 96% | Mon, Apr 27, 2015 | $157m $76.5m – $157m |
|
Avorion | Boxelware 2 titles | 4 | − Simulation − Economy + Exploration + Building | $24.99 | 13,046 | 90% | Mon, Mar 09, 2020 | $12.8m $10.9m – $21.9m |
|
Spaceflight Simulator | Team Curiosity ✦ 2 titles | 4 | − Economy − Flight + 2D + Exploration | $14.99 | 9,551 | 97% | Thu, Feb 17, 2022 | $5.6m $2.6m – $6.5m |
|
X Rebirth | Egosoft 8 titles | 4 | − Economy − Flight + Sci-fi + Action | $29.99 | 5,155 | 42% | Fri, Nov 15, 2013 | $6.7m $3m – $28.9m |
|
X3: Terran Conflict | Egosoft 8 titles | 4 | − Economy − Flight + Sci-fi + Strategy | $15.99 | 2,082 | 85% | Thu, Oct 16, 2008 | $1.4m $610k – $14.6m |
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.