Choose Earth 2160
Choose Earth 2160 if you want the Co-op side of the pairing. On Steam, it has co-op, so you can bring a friend. Earth 2160 launched in 2006.
Earth 2160 vs Perimeter: Emperor's Testament
Earth 2160 and Perimeter: Emperor's Testament 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. Earth 2160 (2006) is 8 years older than Perimeter: Emperor's Testament (2014). Perimeter: Emperor's Testament scores higher on Steam reviews (63.6% positive) than Earth 2160 (59.9% 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 Perimeter: Emperor's Testament
Choose Perimeter: Emperor's Testament if it's currently about 60% cheaper on the Steam Store. Perimeter: Emperor's Testament launched in 2014.
Both Earth 2160 and Perimeter: Emperor's Testament sit in Strategy on Steam and both list Multi-player, 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
 Earth 2160 |  Perimeter: Emperor's Testament | |
|---|---|---|
| Released | 2006 | 2014 |
| Genres | Strategy | Strategy |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 9.99 USD | 3.99 USD |
| Steam reviews | 59.9% positive (327 reviews) | 63.6% positive (11 reviews) |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Co-op | Multi-player |
| Developers | Reality Pump Studios | K-D Lab |
Side by side
- Both are Strategy games on Steam.
- Earth 2160 (2006) is 8 years older than Perimeter: Emperor's Testament (2014).
- Perimeter: Emperor's Testament scores higher on Steam reviews (63.6% positive) than Earth 2160 (59.9% positive).
- Perimeter: Emperor's Testament is currently ~60% cheaper on Steam than Earth 2160 (3.99 USD vs. 9.99 USD).
- Earth 2160 has co-op; Perimeter: Emperor's Testament does not.
- Earth 2160 is Deck Playable on Steam Deck; Perimeter: Emperor's Testament has no Deck rating yet.
Earth 2160 vs Perimeter: Emperor's Testament — FAQ
- Should I play Earth 2160 or Perimeter: Emperor's Testament first?
- If you want chronology, Earth 2160 (2006) came out before Perimeter: Emperor's Testament (2014). 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 Earth 2160 and Perimeter: Emperor's Testament 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 Earth 2160 run on Steam Deck?
- Yes — Earth 2160 is rated Deck Playable by Valve. Perimeter: Emperor's Testament doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.