Colony Siege

Colony Siege

Finifugal Games · September 7, 2020 · Strategy, Simulation, Tower Defense, Sci-fi, RTS

Buy the Colony Siege key for Steam from CJS CD Keys at $10.48 — the cheapest of 4 stores we compare.

PC
Very Positive93% · 258
Best price 24 Fair price
$10.48-48%
lowest tracked $2.49
CJS CD Keys Buy at CJS CD Keys

Prices last checked

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Where to buy Colony Siege — official stores

Steam
Steam
Standard Edition · Steam
$19.99
Buy

Cheapest Colony 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.

CJS CD Keys
CJS CD Keys
Standard Edition · Steam
$10.48
Buy
Eneba
Standard Edition · Steam
$10.60
Buy
Kinguin
Standard Edition · Steam
$17.12
Buy

Colony Siege price by region

Colony Siege costs £7.74 in the United Kingdom, €8.90 in Europe (EUR), $10.48 in the United States, $10.48 in Georgia (USD), CA$25.99 in Canada, NZ$28.99 in New Zealand, A$29.50 in Australia, zł49.72 in Poland and R$59.99 in Brazil right now.

Cheapest Colony Siege offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
United Kingdom £7.74 −54% £16.75 £7.74 3
Europe (EUR) €8.90 −54% €19.50 €8.90 3
United Statesyour region $10.48 −48% $19.99 $10.48 4
Georgia (USD) $10.48 $10.49 $10.48 4
Canada CA$25.99 CA$25.99 — 1
New Zealand NZ$28.99 NZ$28.99 — 1
Australia A$29.50 A$29.50 — 1
Poland zł49.72 −46% zł91.99 zł49.72 2
Brazil R$59.99 R$59.99 — 1

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 Colony Siege

✦ AI summary

Colony Siege blends real-time strategy with tower defense as you build bases, construct mazes, and command mobile units to defend your colony against relentless alien swarms and corrupted foes. Use physics-based traps, orbital strikes, and procedural laser walls to turn the battlefield to your advantage while progressing through a branching campaign solo or with a friend online.

Colony Siege combines the best of RTS and tower defense, including base building, mazing, and unit physics. Defend Earth's remaining colonies using an arsenal of deadly weapons to torch, slice, throw, and impale swarms of alien invaders.

Colony Siege — game info

Platforms
Windows
Steam Deck
Playable
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.

✦ AI summary

Colony Siege is a tower defense game that players find satisfyingly challenging, with praise for its engaging base-building mechanics, generous recycling system, and variety of defensive tools including towers, vehicles, and active abilities. However, common complaints center on balance issues, with many towers and perks feeling useless or overpriced, leading to repetitive strategies across levels, and frustration with flying enemies that seem to bypass defenses unpredictably.

Recommended Aug 12, 2026
This is a very satisfyingly frustrating TD. It's essentially a game where you try to figure out how to tank all the damage each wave. Spreading out all over the map is a fool's errand. You'll be turtling around your Citadel most of the time because the moment something does approach your base, the enemies will melt your defenses. Whatever is in the trailer doesn't really match reality. If you decide to make all these paths and set up all those turrets and traps, many enemies will leak through anyway and your base will be gone in seconds. And if a boss unit comes along, they'll tear through your defenses like butter. This isn't bad, but be aware you'll end up min-maxing and tweaking your base layout a lot. Fortunately, the game is very generous with recycling (100% cost return, even if the enemies destroy your buildings and units) and checkpointing (it saves each wave), so with just a bit of stuborness you'll find the right combination to get you through a particularly nasty wave. If you like TDs that really put you through a wringer, this one will definitely fit the bill. Just make sure to know what you're actually getting into because the first time the enemies will beeline towa…
2 found this helpful
Recommended Feb 13, 2026
The game is not bad. The story also some mechanics and upgrades but. The game gives you a big map and the right to place towers wherever you want, but everything is too expensive and you end up doing the same thing on every level and the game starts to get repetitive. Each tower costs the same amount to upgrade as the same tower. A lot of things are either too expensive or not well balanced or useless. You can only use one perk and most are useless. At least the building skills don't cost you money, but they are quite expensive if you unlock them during battle. Flying enemies attack too hastily or ignore defenses or attack whatever they want and it becomes annoying to guard buildings because they have no defenses. And every time you have to go to the buildings because some little drone is attacking you. Some of the traps look more like towers. The money to buy towers, plane upgrades, traps, skills, and other things becomes useless pretty quickly. You switch to easy to unlock everything, normal for the bonuses, and by the middle everything is already bought. Other things like infinite levels or attacks are only pointless if you want everything 100%. The game is not bad but it needs…
1 found this helpful
Recommended Dec 21, 2025
If you like Supreme Commander and like tower defense games you will love this.
1 found this helpful
Recommended Apr 23, 2026
Awesome game and graphics
Recommended Jan 16, 2026
Lovely little RTS defense game, has push pause as well if you're old and slow like I am. I really like the variety of tools you're given, it's not just towers you have vehicles and lots of active abilities you can get as well.
Recommended Nov 5, 2025
I had a lot of fun with this game. If you like tower defense, you will prob love this.

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