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Games like Calyx | IndieDex

Calyx
Games like Calyx

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single-players with secrets you find without a guideor

Games like Calyx

A single-player strategy game of base building and resource gathering against plant-aliens, with a moderate-length campaign and a rough-around-the-edges feel.

Surviving Ceres
A survival strategy sim on Ceres with crafting, base building, alien defense, and terraforming, offering a satisfying but visually dated ~20-hour colony experience.
2025-05-02
- First person
- Strategy

Indie

Simulator

Role-playing (RPG)

Drill Core cover art

Drill Core

A strategic planet-mining colony sim that mixes base management with tower defense, balancing resource extraction against escalating alien attacks.

2025-07-17

Science fiction
Strategy
Indie
Side view
Sandbox

Artificial Extinction cover art

Artificial Extinction

A tense single-player survival-defense game about collecting fuel and holding out with sentry guns against adaptive AI enemies across a story-driven ~4-6 hour campaign.

2020-03-13

Action
First person
Adventure
Strategy
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

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

Dust Fleet cover art

Dust Fleet

A challenging single-player 4X RTS space sim about commanding and customizing a fleet, controlling stations, and investigating a dark supply station; reviewers logged ~9-hour campaigns.

2023-08-23

Science fiction
Strategy
Third person
Indie
Real Time Strategy (RTS)
4X (explore, expand, exploit, and exterminate)

Final Upgrade cover art

Final Upgrade

A single-player space strategy/sim about factory-building, trade, and AI combat, with a gravity-based side-view and roughly 20 hours of playtime among sampled reviewers.

2022-12-06

Strategy
Indie
Simulator

Exogate Initiative cover art

Exogate Initiative

A sci-fi management simulation about building an underground base, recruiting specialists, and exploring alien worlds via a gate, with moderate pacing but potential technical issues.

2025-01-28

Science fiction
Strategy
Bird view / Isometric
Simulator

Oasis Mission: Colony Sim cover art

Oasis Mission: Colony Sim

A compact sci-fi colony sim with economy management and logistics, mixed reviews due to weak missile-only combat, and a roughly 3.5-hour experience among reviewers.

2025-03-10

Science fiction
Strategy
Bird view / Isometric
Indie
Simulator

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

Here Comes The Swarm cover art

Here Comes The Swarm

A pauseable single-player survival RTS on planet Ulora, where you build, manage, and defend settlements against an endless Swarm, with accessibility options and a roughly 11-hour median reported playtime.

2026-03-05

Strategy
Bird view / Isometric
Indie
Simulator

The Hive cover art

The Hive

A single-player strategy game about commanding an insectoid hivemind to build an underground colony, harvest resources, and evolve your swarm in a beautiful but hostile underworld.

2016-08-25

Action
Adventure
Survival
Strategy
Fantasy
Indie
Real Time Strategy (RTS)
Role-playing (RPG)
Mystery