IMHO.

Planetary Defense: An Orbital Turret Defense System vs Unearthing Invasions

Planetary Defense: An Orbital Turret Defense System and Unearthing Invasions both land in Action, Strategy on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Action, Strategy on Steam. Planetary Defense: An Orbital Turret Defense System (2022) is 2 years older than Unearthing Invasions (2024). Planetary Defense: An Orbital Turret Defense System is currently ~80% cheaper on Steam than Unearthing Invasions (1.99 USD vs. 9.99 USD). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.

Which should you pick?

Choose Planetary Defense: An Orbital Turret Defense System

Choose Planetary Defense: An Orbital Turret Defense System if you want an Indie experience. On Steam, it's currently about 80% cheaper on the Steam Store. Planetary Defense: An Orbital Turret Defense System launched in 2022.

Choose Unearthing Invasions

Choose Unearthing Invasions if you want a Casual and Early Access experience. Unearthing Invasions launched in 2024.

Both Planetary Defense: An Orbital Turret Defense System and Unearthing Invasions sit in Action and Strategy on Steam, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.

Side-by-side comparison

Planetary Defense: An Orbital Turret Defense System vs Unearthing Invasions — Steam metadata comparison
Planetary Defense: An Orbital Turret Defense System — Steam game coverPlanetary Defense: An Orbital Turret Defense SystemUnearthing Invasions — Steam game coverUnearthing Invasions
Released20222024
GenresAction, Strategy, IndieAction, Strategy, Casual, Early Access
PlatformsWindowsWindows, macOS, Linux
Steam DeckUnratedUnrated
Price1.99 USD9.99 USD
Steam reviews3 reviews4 reviews
MultiplayerSingle-player onlySingle-player only
DevelopersSODEC GamesAquarius Max, Shadowed Souls Studios

Side by side

Planetary Defense: An Orbital Turret Defense System vs Unearthing Invasions — FAQ

Should I play Planetary Defense: An Orbital Turret Defense System or Unearthing Invasions first?
If you want chronology, Planetary Defense: An Orbital Turret Defense System (2022) came out before Unearthing Invasions (2024). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
Are Planetary Defense: An Orbital Turret Defense System and Unearthing Invasions similar?
They overlap on Action, Strategy on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
Planetary Defense: An Orbital Turret Defense System vs Unearthing Invasions · imho.run