Choose Natural Selection 2
Choose Natural Selection 2 if you want a Strategy game with Online PvP, PvP, and Valve Anti-Cheat enabled. On Steam, it carries the stronger Steam consensus at 84.9% positive across 5,398 reviews.
Natural Selection 2 vs Interstellar Marines
Natural Selection 2 and Interstellar Marines both land in Action, 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 Action, Indie on Steam. Natural Selection 2 (2012) is 1 year older than Interstellar Marines (2013). Natural Selection 2 scores higher on Steam reviews (84.9% positive) than Interstellar Marines (51.2% 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 Interstellar Marines
Choose Interstellar Marines if you want a Simulation, RPG, and Early Access game with Steam Leaderboards and Co-op. On Steam, it has co-op, so you can bring a friend. 3,444 Steam reviews back the pick.
Both Natural Selection 2 and Interstellar Marines sit in Action and Indie 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
 Natural Selection 2 |  Interstellar Marines | |
|---|---|---|
| Released | 2012 | 2013 |
| Genres | Action, Strategy, Indie | Action, Indie, Simulation, RPG, Early Access |
| Platforms | Windows | Windows, macOS, Linux |
| Steam Deck | Deck Playable | Unrated |
| Price | 4.99 USD | 9.99 USD |
| Steam reviews | 84.9% positive (5,398 reviews) | 51.2% positive (3,444 reviews) |
| Multiplayer | Multi-player | Multi-player, Cross-Platform Multiplayer, Co-op |
| Developers | Unknown Worlds Entertainment | Zero Point Software |
Side by side
- Both share Action, Indie on Steam.
- Natural Selection 2 (2012) is 1 year older than Interstellar Marines (2013).
- Natural Selection 2 scores higher on Steam reviews (84.9% positive) than Interstellar Marines (51.2% positive).
- Natural Selection 2 is currently ~50% cheaper on Steam than Interstellar Marines (4.99 USD vs. 9.99 USD).
- Interstellar Marines has co-op; Natural Selection 2 does not.
- Natural Selection 2 is Deck Playable on Steam Deck; Interstellar Marines has no Deck rating yet.
Natural Selection 2 vs Interstellar Marines — FAQ
- Which is better, Natural Selection 2 or Interstellar Marines?
- On Steam reviews Natural Selection 2 scores higher (84.9% positive) than Interstellar Marines (51.2% positive). Both have enough reviews to trust the signal, so for players using reviews alone, Natural Selection 2 is the safer pick. Genre fit still matters — check the side-by-side table for the categories each game lands in.
- Should I play Natural Selection 2 or Interstellar Marines first?
- If you want chronology, Natural Selection 2 (2012) came out before Interstellar Marines (2013). 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 Natural Selection 2 and Interstellar Marines similar?
- They overlap on Action, 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.
- Does Natural Selection 2 run on Steam Deck?
- Yes — Natural Selection 2 is rated Deck Playable by Valve. Interstellar Marines doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.