Choose Cosmic Coop
Choose Cosmic Coop if you want the Custom Volume Controls, Stereo Sound, and Keyboard Only Option side of the pairing. On Steam, it's Steam Deck Verified, so handheld play works out of the box. Cosmic Coop launched in 2025.
Cosmic Coop vs Readerpet
Cosmic Coop and Readerpet both land in Indie, Simulation, Casual 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, Casual on Steam. Cosmic Coop (2025) is 1 year older than Readerpet (2026). Readerpet is free; Cosmic Coop is paid (4.99 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 Readerpet
Choose Readerpet if you want a Free To Play game with Color Alternatives and Save Anytime. On Steam, it's free to play, so the barrier to trying it is zero. Readerpet launched in 2026.
Both Cosmic Coop and Readerpet sit in Indie, Simulation, and Casual on Steam and both list Adjustable Text Size, Camera Comfort, and Playable without Timed Input, 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
 Cosmic Coop |  Readerpet | |
|---|---|---|
| Released | 2025 | 2026 |
| Genres | Indie, Simulation, Casual | Indie, Simulation, Free To Play, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 4.99 USD | Free to play |
| Steam reviews | 73.9% positive (23 reviews) | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Omnivorian | Cassie Alexander |
Side by side
- Both share Indie, Simulation, Casual on Steam.
- Cosmic Coop (2025) is 1 year older than Readerpet (2026).
- Readerpet is free; Cosmic Coop is paid (4.99 USD).
- Cosmic Coop is Deck Verified on Steam Deck; Readerpet has no Deck rating yet.
Cosmic Coop vs Readerpet — FAQ
- Should I play Cosmic Coop or Readerpet first?
- If you want chronology, Cosmic Coop (2025) came out before Readerpet (2026). 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 Cosmic Coop and Readerpet similar?
- They overlap on Indie, Simulation, Casual 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.
- Is Readerpet free?
- Yes — Readerpet is a free-to-play Steam title. Cosmic Coop is paid (4.99 USD).
- Does Cosmic Coop run on Steam Deck?
- Yes — Cosmic Coop is rated Deck Verified by Valve. Readerpet doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.