Colony Siege

Finifugal Games / Sep 7, 2020 / Simulation, Strategy

windows
Steam Deck Playable

1 playing now

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.

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Part	Your PC	MinimumNot sure	RecommendedNot sure
CPU	Not set	Intel Core i5 or AMD equivalent Can't tell	Intel Core i7 or AMD equivalent Can't tell
GPU	Not set	DirectX 11 compliant graphics card with 2GB dedicated memory Can't tell	DirectX 11 compliant graphics card with 4GB dedicated memory Can't tell
RAM	Not set	4 GB RAM Can't tell	8 GB RAM Can't tell

What's new

Post-launch Update #2

2020-10-07

The second post-launch update for Colony Siege is now available! This update adds the most requested feature: full barrier control! Also included is a significant Pounder buff, major rebalancing of the final mission, better alert sounds, and other fixes and improvements. • Added option to toggle the Energy Barrier between two selected towers. • Increased Pounder blast radius and other balancing. • Improved "colony under attack" and "wave starting" alarm sounds. • Optimized game loading code to reduce initial startup time. • Darla: Reduced bonus requirement from 12 to 8 Spinner Traps. • Chaos: Increased transport health, added additional player units, repair towers prioritize virus transport, and other balancing. • Bosses will now only tolerate a certain amount of repathing. • Fixed case where screen was shaking in Second Chance on ultra wide screen monitors.

Read the full notes

• Switched to the latest Fmod sound library. • Switched to the latest Microsoft C++ library. • Other internal fixes to improve performance and stability, especially for large/complex missions. • Added new Founders (welcome!) Thank you so much for your comments, suggestions, and support. We will continue to closely monitor your feedback!

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What players say

Very Positive

93% positive, 188 reviews

Recommended14 hrs played

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...

2 found this helpful, 2026-08-12

Recommended16 hrs played

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...

1 found this helpful, 2026-02-13

Recommended53 hrs played

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.

0 found this helpful, 2026-01-16

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