Choose Project Zomboid
Choose Project Zomboid if you want a RPG game with Shared/Split Screen, Online PvP, and Shared/Split Screen Co-op. On Steam, it's Steam Deck Verified, so handheld play works out of the box. 147,516 Steam reviews back the pick.
Project Zomboid vs UNKNOWN REGION
Project Zomboid and UNKNOWN REGION both land in Indie, Simulation, Early Access 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 Indie, Simulation, Early Access on Steam. Project Zomboid (2013) is 7 years older than UNKNOWN REGION (2020). Project Zomboid scores higher on Steam reviews (94% positive) than UNKNOWN REGION (47.8% 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 UNKNOWN REGION
Choose UNKNOWN REGION if you want an Adventure experience. On Steam, it's currently about 50% cheaper on the Steam Store. UNKNOWN REGION launched in 2020.
Both Project Zomboid and UNKNOWN REGION sit in Indie, Simulation, and Early Access on Steam and both list Multi-player, Online Co-op, and Co-op, 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
 Project Zomboid |  UNKNOWN REGION | |
|---|---|---|
| Released | 2013 | 2020 |
| Genres | Indie, Simulation, RPG, Early Access | Indie, Adventure, Simulation, Early Access |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 19.99 USD | 9.99 USD |
| Steam reviews | 94% positive (147,516 reviews) | 47.8% positive (23 reviews) |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Online Co-op | Multi-player, Online Co-op, Co-op |
| Developers | The Indie Stone | SYDNEY GAMES |
Side by side
- Both share Indie, Simulation, Early Access on Steam.
- Project Zomboid (2013) is 7 years older than UNKNOWN REGION (2020).
- Project Zomboid scores higher on Steam reviews (94% positive) than UNKNOWN REGION (47.8% positive).
- UNKNOWN REGION is currently ~50% cheaper on Steam than Project Zomboid (9.99 USD vs. 19.99 USD).
- Both support cooperative play.
- Project Zomboid is Deck Verified on Steam Deck; UNKNOWN REGION has no Deck rating yet.
Project Zomboid vs UNKNOWN REGION — FAQ
- Should I play Project Zomboid or UNKNOWN REGION first?
- If you want chronology, Project Zomboid (2013) came out before UNKNOWN REGION (2020). 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 Project Zomboid and UNKNOWN REGION similar?
- They overlap on Indie, Simulation, Early Access 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.
- Do both Project Zomboid and UNKNOWN REGION have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Project Zomboid ships Online Co-op, Shared/Split Screen Co-op; UNKNOWN REGION ships Online Co-op, Co-op.
- Does Project Zomboid run on Steam Deck?
- Yes — Project Zomboid is rated Deck Verified by Valve. UNKNOWN REGION doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.