Choose Portal 2
Choose Portal 2 if you want an Adventure game with Multi-player, Shared/Split Screen, and Online Co-op. On Steam, it's Steam Deck Verified, so handheld play works out of the box. 169,764 Steam reviews back the pick.
Portal 2 vs N.E.O
Portal 2 and N.E.O both land in Action 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 Action games on Steam. Portal 2 (2011) is 8 years older than N.E.O (2019). N.E.O is currently ~30% cheaper on Steam than Portal 2 (6.99 USD vs. 9.99 USD). 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 N.E.O
Choose N.E.O if it's currently about 30% cheaper on the Steam Store. N.E.O launched in 2019.
Both Portal 2 and N.E.O sit in Action 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
 Portal 2 |  N.E.O | |
|---|---|---|
| Released | 2011 | 2019 |
| Genres | Action, Adventure | Action |
| Platforms | Windows, Linux | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 9.99 USD | 6.99 USD |
| Steam reviews | 98.9% positive (169,764 reviews) | — |
| Multiplayer | Multi-player, Online Co-op, Shared/Split Screen Co-op | Single-player only |
| Developers | Valve | Black Beard Design Studio Inc. |
Side by side
- Both are Action games on Steam.
- Portal 2 (2011) is 8 years older than N.E.O (2019).
- N.E.O is currently ~30% cheaper on Steam than Portal 2 (6.99 USD vs. 9.99 USD).
- Portal 2 has co-op; N.E.O does not.
- Portal 2 is Deck Verified on Steam Deck; N.E.O has no Deck rating yet.
Portal 2 vs N.E.O — FAQ
- Should I play Portal 2 or N.E.O first?
- If you want chronology, Portal 2 (2011) came out before N.E.O (2019). 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 Portal 2 and N.E.O similar?
- They overlap on Action 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 N.E.O have multiplayer like Portal 2?
- No. Portal 2 supports multiplayer on Steam (Multi-player, Online Co-op, Shared/Split Screen Co-op), while N.E.O is listed as single-player only.
- Does Portal 2 run on Steam Deck?
- Yes — Portal 2 is rated Deck Verified by Valve. N.E.O doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.