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Space Mercenary Defense Force

Defend against the alien invasion and take down the mother ship! Utilise branching upgrade trees, unlock new ships, and equip permanent upgrades to create your own unique build and defeat the growing hordes of invaders in this sci-fi action roguelike!

Steam Page
Developer
Tom Paradise
Publisher
Tom Paradise
Release
November 14, 2023
2 years and 261 days ago
Steam Reviews
Positive17 reviews88.2%

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Updated: Jul 14, 2026Developer scaleThe operating scale of the game's developer.
Updated: Jul 14, 2026Publisher scaleThe operating scale of the game's publisher.
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Search Google: How is Space Mercenary Defense Force and Tom Paradise funded?FundingThe known source of funding behind the game.
Updated: Jul 14, 2026Creative controlWho appears to retain creative control of the game.
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12 items

About the Game

Defend the planet from an invasion of alien monsters in this sci-fi action roguelike!

Combine Different Ship Modules Each Run

Equip your ship's directional module slots with various module types such as explosive, defensive, deployable, beam, & more!

Choose Your Own Upgrade Paths

Featuring over 600 upgrades with unique progression via branching paths you can make each run different and unique with your choices.

Optional Encounters

Complete optional random Encounters like fighting minibosses or charging a conduit to earn rewards and further level up your ship!

Dynamic Threat Events

Aliens aren't your only threat! Survive the various timed threats such as Off-World Targeting, Outer Atmosphere Lightning, Pulsing Solar Flares, & more!

Permanent Upgrades And Unlocks

Spend your hard earned credits on new ships, skins, & permanent Astral Upgrades and complete objectives to unlock ship perks, and Celestial Modifiers!

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