

Outpost: Infinity Siege
Team Ranger · March 26, 2024 · Robots, 3D, Base Building, Tower Defense, FPS
Buy the Outpost: Infinity Siege key for Steam from Driffle INC at $5.45 — the cheapest of 19 stores we compare.
Where to buy Outpost: Infinity Siege — official stores
Cheapest Outpost: Infinity Siege keys — keyshops
Keyshops are third-party marketplaces — keys are resold and can be region-locked or a different edition. Check the listing's region & edition before buying.
Some store links are affiliate links — playze may earn a commission at no extra cost to you. It never changes the price you pay, and the cheapest confirmed price is always shown in the Best price box above.
Outpost: Infinity Siege price by region
Outpost: Infinity Siege costs £4.06 in the United Kingdom, €4.87 in Europe (EUR), $5.45 in the United States, $5.45 in Georgia (USD), CA$13.00 in Canada, A$14.60 in Australia, zł21.49 in Poland, R$29.92 in Brazil and NZ$35.99 in New Zealand right now.
| Region | Best price | Official store | Key shop | Stores |
|---|---|---|---|---|
| £4.06 −60% | £8.39 | £4.06 | 16 | |
| €4.87 −60% | €9.80 | €4.87 | 17 | |
| $5.45 −60% | $9.99 | $5.45 | 19 | |
| $5.45 −56% | $12.49 | $5.45 | 18 | |
| CA$13.00 −60% | CA$13.00 | CA$22.83 | 15 | |
| A$14.60 −60% | A$14.60 | A$36.50 | 13 | |
| zł21.49 −74% | zł81.86 | zł21.49 | 13 | |
| R$29.92 −60% | R$73.99 | R$29.92 | 11 | |
| NZ$35.99 −17% | NZ$35.99 | NZ$35.99 | 11 |
Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.
Screenshots
About Outpost: Infinity Siege
Build and upgrade your outpost by exploring the world, gathering resources, and merging units while wielding a customizable XEN Firearm with unique ammunition types. Team up with friends in co-op modes to survive endless monster waves or tackle challenging exploration zones packed with loot and hazards.

Outpost Building
Explore the world, gather resources, merge and upgrade outpost units to build your own outpost.
Unique Weapon
Fully exploit the value of the unique XEN Firearm with different protoslag attributes, and utilize ammunition with diverse performance.
Loot & Farm
Enjoy the abundant difficulty levels, diverse gameplay features, and distinctive maps of the exploration mode. Venture deep into the brand new zones full of hazards and opportunities, and harvest powerful outpost units.
Co-op Feature
Fight alongside friends on Recovery Day, or strive together to survive infinite waves of monsters in Endless mode till the last moment.
Outpost: Infinity Siege — game info
- Platforms
- Windows
- Steam Deck
- Unsupported
- Player modes
- Single-player, Online co-op
- PC Game Pass
- Not included
What Steam players say
Recent verbatim reviews from Steam — separate from playze.io community reviews below.
Outpost: Infinity Siege is a unique hybrid of tower defense, FPS, and base-building that offers substantial content and replayability, with players praising its creative weapon and automation systems and the potential for dozens of hours of gameplay. However, the game suffers from poor optimization, an unfinished campaign that ends abruptly, apparent developer abandonment, and repetitive gameplay loops that wear thin over time.
The game concept had very high potential, but the dev team got ♥♥♥♥♥♥ over by the publisher and eventually disbanded. Abandonware.5 found this helpful
Would have been better as a sandbox openworld survival/crafting/base building tower defence game instead of mission based.1 found this helpful
liked the 27 mins i could play. kept crashing on start because vram to low???? dont know how i have 24g of it but whatever. recommended me change setting but wouldn't load long enough to change settings very stupid.1 found this helpful
Get this game only with a key, the original devs basically got screwed over by the Publisher. Its a nice game to play for some time and a pretty unique genre mix but this game itself feels more like a very extensive Beta version of what could've been the actual game. Very cheap voice acting, very basic story etc. Its somewhat mid overall but does indeed play nicely together with friends once you're having your big last stands but it hides too many essential mechanics behind the late game grind which is a very big no-no. It was truly a game with potential but died due to the earlier mentioned screw-over. The ex-head dev is working on a very similar game with no fps mechanics called "Caliber Citadel" with updates on it on the YT channel so do check that out.1 found this helpful
alright the game is pretty optimized and that is good for an UE5 game now onto the review, well more specifically the gameplay loop. the story isnt a strong suit here, just a "humanity is on its last legs we need to strike back" you will spend 30% of the game auto/normal traveling the map gathering resources, blueprints and completing MQ objectives 25% in your base builder designing how you want your base to after going across the map looking for the mats you need 25% in a defense holdout. how much gear you find and take back with you makes the holdout longer, up to 10 minutes, and if you die/fail, you need to do it over again and the last 20% is gearing yourself up, choosing what attachments your weapons have, what kind of gear you take, etc all these things checked my boxes and i enjoyed it greatly, if this strikes your fancy you will have fun with it too
Good game
Community reviews
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