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Games like Colony Siege | IndieDex

Colony Siege
Games like Colony Siege

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Games like Colony Siege

A physics-driven RTS/tower-defense hybrid about base building, path mazing, and defending Earth's colonies from alien swarms in solo or co-op.

Frontline Crisis
A strategy-heavy mech-defense game where you protect humanity's last sanctuary from insect swarms, with co-op/split-screen play and a reviewer-reported roughly nine-hour campaign.
2024-08-14
- Shooter
- Action

Science fiction

Strategy

Bird view / Isometric

Real Time Strategy (RTS)

Axon TD: Uprising - Tower Defense cover art

Axon TD: Uprising - Tower Defense

A strategic tower defense game where you expand the map to funnel enemies and place specialized towers, offering single-player, co-op, and roguelite modes; sampled reviewers logged roughly 26–30 hours.

2024-09-27

Science fiction
Strategy
Bird view / Isometric
Indie

X-Morph: Defense cover art

X-Morph: Defense

A fast-paced top-down shooter/tower-defense hybrid where you play the alien invader, balancing tower placement and direct combat in a roughly nine-hour campaign with co-op.

2017-08-30

Shooter
Action
Science fiction
Strategy
Bird view / Isometric
Indie
Simulator
Arcade

D.O.T. Defence cover art

D.O.T. Defence

A fast-paced strategy hybrid of tower defense and army tactics with local split-screen multiplayer, a single-player campaign, and roughly 11 hours of reviewer playtime.

2026-06-11

Warfare
Comedy
Strategy
Bird view / Isometric
Real Time Strategy (RTS)

Taur cover art

Taur

Control the Prime Cannon and build defenses to repel an invasion in this single-player sci-fi action-strategy game with a substantial campaign.

2020-02-19

Action
Strategy
Bird view / Isometric
Indie

Cast Out Colony cover art

Cast Out Colony

An action roguelite mixing bullet-heaven horde combat with colony-building stat progression, featuring solid mechanics and a lengthy progression loop.

2025-03-03

Action
Bird view / Isometric
Indie

Outpost: Infinity Siege cover art

Outpost: Infinity Siege

A military sci-fi FPS/tower-defense/base-building hybrid where you command a mobile outpost solo or in co-op, with mixed reviews and stability concerns.

2024-03-26

Shooter
Action
First person
Science fiction
Strategy
Bird view / Isometric

Neural Shock cover art

Neural Shock

A grim sci-fi tower defense action RPG with direct hero control, elemental fusion, and persistent progression, clocking in at roughly 13 hours.

2024-06-19

Action
Science fiction
Strategy
Bird view / Isometric
Indie
Role-playing (RPG)

IDUN - Frontline Survival cover art

IDUN - Frontline Survival

A single-player space defense RTS about repositioning turrets and upgrading tech against hordes, with a short story padded by side-missions and a balanced challenge; reviewers played roughly 10–18 hours.

2025-01-20

Action
Strategy
Bird view / Isometric
Simulator

Towerful Defense: A Rogue TD cover art

Towerful Defense: A Rogue TD

A run-based single-player tower defense focused on one tower, loadout-building, and alien hordes, with a hands-on, trade-off-heavy feel.

2024-07-29

Action
Strategy
Indie

Desperate Place cover art

Desperate Place

A strategic single-player tower defense game about repairing a stranded starship on an alien planet, with an active shooter twist and a ~4-hour campaign.

2025-04-21

Shooter
Science fiction
Strategy
Bird view / Isometric
Indie

Harvest: Massive Encounter cover art

Harvest: Massive Encounter

A single-player RTS base-builder about managing energy and fending off endless alien waves, with deep long-term appeal.

2009-01-23

Science fiction
Strategy
Indie
Real Time Strategy (RTS)