Choose X3: Reunion
Choose X3: Reunion if it's currently about 60% cheaper on the Steam Store. X3: Reunion launched in 2006.
X3: Reunion vs Unending Galaxy
X3: Reunion and Unending Galaxy 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. X3: Reunion (2006) is 10 years older than Unending Galaxy (2016). X3: Reunion scores higher on Steam reviews (65.1% positive) than Unending Galaxy (57.3% 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 Unending Galaxy
Choose Unending Galaxy if you want an Indie and Simulation experience. On Steam, it's the newer release (2016) and ships with the modern feature baseline. Unending Galaxy launched in 2016.
Both X3: Reunion and Unending Galaxy 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
 X3: Reunion |  Unending Galaxy | |
|---|---|---|
| Released | 2006 | 2016 |
| Genres | Strategy | Strategy, Indie, Simulation |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Deck Unsupported | Deck Playable |
| Price | 1.99 USD | 4.99 USD |
| Steam reviews | 65.1% positive (295 reviews) | 57.3% positive (89 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Egosoft | Anarkis Gaming |
Side by side
- Both are Strategy games on Steam.
- X3: Reunion (2006) is 10 years older than Unending Galaxy (2016).
- X3: Reunion scores higher on Steam reviews (65.1% positive) than Unending Galaxy (57.3% positive).
- X3: Reunion is currently ~60% cheaper on Steam than Unending Galaxy (1.99 USD vs. 4.99 USD).
- Steam Deck: X3: Reunion is Deck Unsupported, Unending Galaxy is Deck Playable.
X3: Reunion vs Unending Galaxy — FAQ
- Should I play X3: Reunion or Unending Galaxy first?
- If you want chronology, X3: Reunion (2006) came out before Unending Galaxy (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 X3: Reunion and Unending Galaxy 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.