Choose Natural Selection 2
Choose Natural Selection 2 if you want a Strategy game with Multi-player, Online PvP, and PvP. 5,398 Steam reviews back the pick.
Natural Selection 2 vs BIOS
Natural Selection 2 and BIOS 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 4 years older than BIOS (2016). Natural Selection 2 scores higher on Steam reviews (84.9% positive) than BIOS (60.5% 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 BIOS
Choose BIOS if you want the Steam Leaderboards and Co-op side of the pairing. On Steam, it's currently about 40% cheaper on the Steam Store. BIOS launched in 2016.
Both Natural Selection 2 and BIOS sit in Action and Indie 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
 Natural Selection 2 |  BIOS | |
|---|---|---|
| Released | 2012 | 2016 |
| Genres | Action, Strategy, Indie | Action, Indie |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 4.99 USD | 2.99 USD |
| Steam reviews | 84.9% positive (5,398 reviews) | 60.5% positive (81 reviews) |
| Multiplayer | Multi-player | Co-op |
| Developers | Unknown Worlds Entertainment | PIXYUL |
Side by side
- Both share Action, Indie on Steam.
- Natural Selection 2 (2012) is 4 years older than BIOS (2016).
- Natural Selection 2 scores higher on Steam reviews (84.9% positive) than BIOS (60.5% positive).
- BIOS is currently ~40% cheaper on Steam than Natural Selection 2 (2.99 USD vs. 4.99 USD).
- BIOS has co-op; Natural Selection 2 does not.
- Natural Selection 2 is Deck Playable on Steam Deck; BIOS has no Deck rating yet.
Natural Selection 2 vs BIOS — FAQ
- Should I play Natural Selection 2 or BIOS first?
- If you want chronology, Natural Selection 2 (2012) came out before BIOS (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 Natural Selection 2 and BIOS 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. BIOS doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.