Choose Don't kill the fish
Choose Don't kill the fish if you want a Simulation game with Steam Leaderboards and Mouse Only Option. On Steam, it's currently about 67% cheaper on the Steam Store. Don't kill the fish launched in 2025.
Don't kill the fish vs Marisa!ReturnTheBook!
Don't kill the fish and Marisa!ReturnTheBook! both land in Indie, 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, Casual on Steam. Both released in 2025. Don't kill the fish is currently ~67% cheaper on Steam than Marisa!ReturnTheBook! (1.99 USD vs. 5.99 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 Marisa!ReturnTheBook!
Choose Marisa!ReturnTheBook! if you want the Subtitle Options and Stereo Sound side of the pairing. Marisa!ReturnTheBook! launched in 2025.
Both Don't kill the fish and Marisa!ReturnTheBook! sit in Indie and Casual on Steam and both list Color Alternatives, Camera Comfort, and Custom Volume Controls, 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
 Don't kill the fish |  Marisa!ReturnTheBook! | |
|---|---|---|
| Released | 2025 | 2025 |
| Genres | Indie, Simulation, Casual | Indie, Casual |
| Platforms | Windows, Linux | Windows |
| Steam Deck | Unrated | Deck Playable |
| Price | 1.99 USD | 5.99 USD |
| Steam reviews | — | 90.7% positive (108 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | YMY Games | NARROW, TSUKUYOMIC |
Side by side
- Both share Indie, Casual on Steam.
- Both released in 2025.
- Don't kill the fish is currently ~67% cheaper on Steam than Marisa!ReturnTheBook! (1.99 USD vs. 5.99 USD).
- Marisa!ReturnTheBook! is Deck Playable on Steam Deck; Don't kill the fish has no Deck rating yet.
Don't kill the fish vs Marisa!ReturnTheBook! — FAQ
- Are Don't kill the fish and Marisa!ReturnTheBook! similar?
- They overlap on Indie, 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.