Choose The Cenozoic Era
Choose The Cenozoic Era if you want a Strategy and Massively Multiplayer game with MMO, Online PvP, and PvP. On Steam, it's free to play, so the barrier to trying it is zero. The Cenozoic Era launched in 2023.
The Cenozoic Era vs Backrooms: Overstay
The Cenozoic Era and Backrooms: Overstay both land in Action, Indie, Adventure 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, Adventure on Steam. The Cenozoic Era is free; Backrooms: Overstay is paid (Price unknown). Both support cooperative play. 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 Backrooms: Overstay
Choose Backrooms: Overstay if you want the LAN Co-op and DualShock Controller Support side of the pairing.
Both The Cenozoic Era and Backrooms: Overstay sit in Action, Indie, and Adventure 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
 The Cenozoic Era |  Backrooms: Overstay | |
|---|---|---|
| Released | 2023 | — |
| Genres | Action, Strategy, Indie, Adventure, Simulation, Massively Multiplayer, Early Access | Action, Indie, Adventure, Simulation, Early Access |
| Platforms | Windows | Windows, macOS, Linux |
| Steam Deck | Deck Playable | Unrated |
| Price | Free to play | Price unknown |
| Steam reviews | 51.2% positive (662 reviews) | — |
| Multiplayer | Multi-player, Online Co-op, Co-op | Multi-player, Online Co-op, LAN Co-op |
| Developers | Opendix [Studios] | L&L Games |
Side by side
- Both share Action, Indie, Adventure on Steam.
- The Cenozoic Era is free; Backrooms: Overstay is paid (Price unknown).
- Both support cooperative play.
- The Cenozoic Era is Deck Playable on Steam Deck; Backrooms: Overstay has no Deck rating yet.
The Cenozoic Era vs Backrooms: Overstay — FAQ
- Are The Cenozoic Era and Backrooms: Overstay similar?
- They overlap on Action, Indie, Adventure 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 The Cenozoic Era and Backrooms: Overstay have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: The Cenozoic Era ships Online Co-op, Co-op; Backrooms: Overstay ships Online Co-op, LAN Co-op.
- Is The Cenozoic Era free?
- Yes — The Cenozoic Era is a free-to-play Steam title. Backrooms: Overstay is paid (Price unknown).
- Does The Cenozoic Era run on Steam Deck?
- Yes — The Cenozoic Era is rated Deck Playable by Valve. Backrooms: Overstay doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.