IMHO.

Relativity Wars - A Science Space RTS vs Spacefleet: Heat Death

Relativity Wars - A Science Space RTS and Spacefleet: Heat Death both land in Strategy, Simulation, RPG 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, Simulation, RPG on Steam. Relativity Wars - A Science Space RTS (2015) is 11 years older than Spacefleet: Heat Death (2026). Spacefleet: Heat Death scores higher on Steam reviews (93.1% positive) than Relativity Wars - A Science Space RTS (53.8% positive). 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 Relativity Wars - A Science Space RTS

Choose Relativity Wars - A Science Space RTS if you want an Indie and Adventure experience. On Steam, it's currently about 50% cheaper on the Steam Store. Relativity Wars - A Science Space RTS launched in 2015.

Choose Spacefleet: Heat Death

Choose Spacefleet: Heat Death if you want an Early Access game with Stereo Sound, Playable without Timed Input, and Adjustable Difficulty. On Steam, it's the newer release (2026) and ships with the modern feature baseline. Spacefleet: Heat Death launched in 2026.

Both Relativity Wars - A Science Space RTS and Spacefleet: Heat Death sit in Strategy, Simulation, and RPG 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

Relativity Wars - A Science Space RTS vs Spacefleet: Heat Death — Steam metadata comparison
Relativity Wars - A Science Space RTS — Steam game coverRelativity Wars - A Science Space RTSSpacefleet: Heat Death — Steam game coverSpacefleet: Heat Death
Released20152026
GenresStrategy, Indie, Adventure, Simulation, RPGStrategy, Simulation, RPG, Early Access
PlatformsWindowsWindows
Steam DeckUnratedDeck Playable
Price5.99 USD11.99 USD
Steam reviews53.8% positive (13 reviews)93.1% positive (29 reviews)
MultiplayerSingle-player onlySingle-player only
DevelopersFungameco LtdSpacezero Interactive

Side by side

Relativity Wars - A Science Space RTS vs Spacefleet: Heat Death — FAQ

Should I play Relativity Wars - A Science Space RTS or Spacefleet: Heat Death first?
If you want chronology, Relativity Wars - A Science Space RTS (2015) came out before Spacefleet: Heat Death (2026). 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 Relativity Wars - A Science Space RTS and Spacefleet: Heat Death similar?
They overlap on Strategy, Simulation, RPG 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.
Relativity Wars - A Science Space RTS vs Spacefleet: Heat Death · imho.run