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Outpost: Infinity Siege
Command Mobile Outpost and take XEN Firearm to venture deep into the Signet surveillance off-limit area. Collect unique Weapon Units. Amp up the firepower of the Outpost that fights with you. This is an FTD game - FPS, Tower Defense, Base Building and much more all at the same time.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.
What reviewers agree on
63 of the 82 reviews raise this.
“After more than 200 hours playing this game, I am now writing my review. First of all, the game is “finished”; there will be no more updates, even though a lot of things look unfinished and unoptimized. The tutorial and…”
“After 50+ hours I can say that all of my hype has sadly died down, just like the game itself. Is the idea good? Yes. Is it fun in general? Yes. Then what's the issue? Optimization, gameplay, and bugs. Optimization: At…”
“Honestly it was a cool concept, a mobile base that you keep adding on to, and bring with you into battle. To have a small part of the map be something that you made and makes a huge impact on gameplay is honestly pretty…”
7 of the 82 reviews raise this.
“I'm disappointed the game got abandoned, but i did get my money's worth and it was a fun ride until i got bored of it.”
“I don't understand all the bad review that people give after more dans 50h gameplay. Its a fun game, Base bulding, defence + FPS with a looting system. Its worth the price.”
5 of the 82 reviews raise this.
4 of the 82 reviews raise this.
3 of the 82 reviews raise this.
“This game is kinda cool! Good work guys, i hope you will continue updating the game! I really love playing it with my friends.”
23 of the 82 reviews raise this · 10 of them still recommend the game.
“[h3]Outpost: Infinity Siege Review - "I'm Tired, Boss" Edition[/h3] Honestly? I can't be bothered to write one of my usual reviews for this game. It doesn't deserve it, as it doesn't deserve any more of my time.…”
“After more than 200 hours playing this game, I am now writing my review. First of all, the game is “finished”; there will be no more updates, even though a lot of things look unfinished and unoptimized. The tutorial and…”
“Game was in a better state during the closed Alpha i cannot talk about than it is right now... Devs got review bombed after a terrible rework to the building system one update that broke everyones saves, the devs threw…”
23 of the 82 reviews raise this · 8 of them still recommend the game.
“After more than 200 hours playing this game, I am now writing my review. First of all, the game is “finished”; there will be no more updates, even though a lot of things look unfinished and unoptimized. The tutorial and…”
“the game works and is playable, but missing content that was clearly planned, and a story that just ends before the final act i cant recommend. mixed”
“Game was in a better state during the closed Alpha i cannot talk about than it is right now... Devs got review bombed after a terrible rework to the building system one update that broke everyones saves, the devs threw…”
12 of the 82 reviews raise this · 7 of them still recommend the game.
“[h3]Outpost: Infinity Siege Review - "I'm Tired, Boss" Edition[/h3] Honestly? I can't be bothered to write one of my usual reviews for this game. It doesn't deserve it, as it doesn't deserve any more of my time.…”
“After 50+ hours I can say that all of my hype has sadly died down, just like the game itself. Is the idea good? Yes. Is it fun in general? Yes. Then what's the issue? Optimization, gameplay, and bugs. Optimization: At…”
“Honestly it was a cool concept, a mobile base that you keep adding on to, and bring with you into battle. To have a small part of the map be something that you made and makes a huge impact on gameplay is honestly pretty…”
12 of the 82 reviews raise this · 7 of them still recommend the game.
“After 50+ hours I can say that all of my hype has sadly died down, just like the game itself. Is the idea good? Yes. Is it fun in general? Yes. Then what's the issue? Optimization, gameplay, and bugs. Optimization: At…”
“Honestly it was a cool concept, a mobile base that you keep adding on to, and bring with you into battle. To have a small part of the map be something that you made and makes a huge impact on gameplay is honestly pretty…”
“Game was in a better state during the closed Alpha i cannot talk about than it is right now... Devs got review bombed after a terrible rework to the building system one update that broke everyones saves, the devs threw…”
10 of the 82 reviews raise this · 6 of them still recommend the game.
“After more than 200 hours playing this game, I am now writing my review. First of all, the game is “finished”; there will be no more updates, even though a lot of things look unfinished and unoptimized. The tutorial and…”
“Honestly it was a cool concept, a mobile base that you keep adding on to, and bring with you into battle. To have a small part of the map be something that you made and makes a huge impact on gameplay is honestly pretty…”
“Game was in a better state during the closed Alpha i cannot talk about than it is right now... Devs got review bombed after a terrible rework to the building system one update that broke everyones saves, the devs threw…”
Counted across 82 English reviews, sampled to match this game's 66.8% positive rating · as of 2026-05-20
“PLEASE NOTE: THIS GAME HAS BEEN ABANDONED. DEVELOPERS ARE WORKING ON SEQUEL. The game is really fun. By far the best Tower Defense Base Building FPS out there. Graphics are pretty good so it is recommended to have a "Better" PC. The gameplay loop does tend to get repetitive…”
— a player, Steam review · 252 hrs played“Its weird. I love the gameplay loop, the exploration and defence, building my outpost etc. Its surprisingly well done. So maybe The good: Player skills and weapons/gear customization is very cool. Can do weird combos with those The base building is great i love how the outpost…”
— a player, Steam review · 50 hrs played“⭐ The devs abandoning the game is the real betrayal When a studio says: “We’re not fixing this game. We’re making a sequel instead.” What they’re really saying is: “We know this version is broken.” “We don’t want to spend the time fixing it.” “We’d rather sell you a new one.”…”
— a player, Steam review · 55 hrs playedPlayer activity
Monthly average concurrent players. Live count fetched 2026-07-11 13:44 UTC · history via SteamCharts.
Achievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Update on Original Soundtrack for
Dear Commanders,Thank you for your tremendous support and enthusiasm for the Original Soundtrack of Outpost: Infinity Siege.We regret to inform you that, due to copyright reasons, a selection of track
Free Soundtrack Available Now
Dear Commanders, It's been a while since we last shared an update as we've been deeply immersed in the world of Outpost. Your incredible passion and patience throughout this journey mean the world to
[Patch Note] Autoloader can now be filled up before Mission
v2.0-16f949d.2024.1218.15 1. series can be filled with Ammo Boxes and shells from the warehouse before the tour starts. (old archive needs to be re-saved with the outpost configuration to take effect)
【Update content】New turret: Exterminator!
Hello, players! This update introduces a new turret: the Exterminator. Additionally, adjustments have been made to certain gears and XENs. At the same time, the Gamma corps, originally seen at Dawn Ba
[Patch Notes] Bug fixes
v2.0-4d5d3f0.2024.0927.13 Fixed several issues that could cause the game to crash.
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-20.
| Genres | Action, Strategy |
| Player tags | Robots · 3D · Base-Building · Tower Defense · FPS · Resource Management · Co-op · Singleplayer · Post-apocalyptic · Sci-fi · Automation · Strategy (SteamSpy community voting) |
| Features | Single-player · Multi-player · Co-op · Online Co-op · Steam Achievements · Steam Cloud · Family Sharing |
| Languages | Simplified Chinese * , English * , French, German, Japanese, Traditional Chinese, Korean * |
| Achievements | 26 |
| Estimated owners | 200,000 – 500,000 (SteamSpy) |
| Official site | https://www.outpostgame.net/ |
Minimum system requirements (PC)
Minimum: Requires a 64-bit processor and operating system OS: Windows 10 Processor: Intel i5 9600 Memory: 16 GB RAM Graphics: NVIDIA GeForce GTX 1650 / AMD Radeon RX 570 / Intel ARC A380 DirectX: Version 12 Storage: 45 GB available space Additional Notes: 1080P，Low，30FPS