Choose Stellaris
Choose Stellaris if you want a Simulation game with Multi-player. 75,169 Steam reviews back the pick.
Stellaris vs Galaxy Union
Stellaris and Galaxy Union both land in 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 are Strategy games on Steam. Galaxy Union (2015) is 1 year older than Stellaris (2016). Stellaris scores higher on Steam reviews (86.5% positive) than Galaxy Union (57.1% 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 Galaxy Union
Choose Galaxy Union if it's currently about 50% cheaper on the Steam Store. Galaxy Union launched in 2015.
Both Stellaris and Galaxy Union sit in 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
 Stellaris |  Galaxy Union | |
|---|---|---|
| Released | 2016 | 2015 |
| Genres | Strategy, Simulation | Strategy |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 9.99 USD | 4.99 USD |
| Steam reviews | 86.5% positive (75,169 reviews) | 57.1% positive (14 reviews) |
| Multiplayer | Multi-player, Cross-Platform Multiplayer | Single-player only |
| Developers | Paradox Development Studio | cybercritics |
Side by side
- Both are Strategy games on Steam.
- Galaxy Union (2015) is 1 year older than Stellaris (2016).
- Stellaris scores higher on Steam reviews (86.5% positive) than Galaxy Union (57.1% positive).
- Galaxy Union is currently ~50% cheaper on Steam than Stellaris (4.99 USD vs. 9.99 USD).
- Stellaris is Deck Playable on Steam Deck; Galaxy Union has no Deck rating yet.
Stellaris vs Galaxy Union — FAQ
- Should I play Stellaris or Galaxy Union first?
- If you want chronology, Galaxy Union (2015) came out before Stellaris (2016). 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 Stellaris and Galaxy Union similar?
- They overlap on 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.
- Does Galaxy Union have multiplayer like Stellaris?
- No. Stellaris supports multiplayer on Steam (Multi-player, Cross-Platform Multiplayer), while Galaxy Union is listed as single-player only.
- Does Stellaris run on Steam Deck?
- Yes — Stellaris is rated Deck Playable by Valve. Galaxy Union doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.