IMHO.

Mastermine vs Space Mergers

Mastermine and Space Mergers both land in Strategy, Indie 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 Strategy, Indie on Steam. Mastermine (2021) is 3 years older than Space Mergers (2024). Both sit near 93% positive on Steam (Mastermine: 14 reviews, Space Mergers: 13). 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 Mastermine

Choose Mastermine if you want a Casual experience. On Steam, it's currently about 40% cheaper on the Steam Store. Mastermine launched in 2021.

Choose Space Mergers

Choose Space Mergers if you want an Adventure experience. On Steam, it's the newer release (2024) and ships with the modern feature baseline. Space Mergers launched in 2024.

Both Mastermine and Space Mergers sit in Strategy and Indie on Steam, so either pick lands in the same broad neighborhood. Steam reviews are nearly tied (92.9% vs 92.3% positive), so genre fit is the cleanest tiebreaker — scroll the table for the feature-by-feature view.

Side-by-side comparison

Mastermine vs Space Mergers — Steam metadata comparison
Mastermine — Steam game coverMastermineSpace Mergers — Steam game coverSpace Mergers
Released20212024
GenresStrategy, Indie, CasualStrategy, Indie, Adventure
PlatformsWindows, macOS, LinuxWindows, macOS, Linux
Steam DeckUnratedUnrated
Price2.99 USD4.99 USD
Steam reviews92.9% positive (14 reviews)92.3% positive (13 reviews)
MultiplayerSingle-player onlySingle-player only
DevelopersAdam SoutarMelonFruit

Side by side

Mastermine vs Space Mergers — FAQ

Should I play Mastermine or Space Mergers first?
If you want chronology, Mastermine (2021) came out before Space Mergers (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 Mastermine and Space Mergers similar?
They overlap on Strategy, Indie 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.
Mastermine vs Space Mergers — Verdict (2026) · imho.run