Choose Heart
Choose Heart if you want a Strategy experience. On Steam, it's currently about 50% cheaper on the Steam Store. Heart launched in 2024.
Heart vs Don't kill the fish
Heart and Don't kill the fish 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. Heart (2024) is 1 year older than Don't kill the fish (2025). Heart is currently ~50% cheaper on Steam than Don't kill the fish (0.99 USD vs. 1.99 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 Don't kill the fish
Choose Don't kill the fish if you want a Simulation game with Steam Leaderboards, Color Alternatives, and Camera Comfort. Don't kill the fish launched in 2025.
Both Heart and Don't kill the fish sit in Indie and Casual 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
 Heart |  Don't kill the fish | |
|---|---|---|
| Released | 2024 | 2025 |
| Genres | Strategy, Indie, Casual | Indie, Simulation, Casual |
| Platforms | Windows | Windows, Linux |
| Steam Deck | Unrated | Unrated |
| Price | 0.99 USD | 1.99 USD |
| Steam reviews | 2 reviews | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | undownsidable | YMY Games |
Side by side
- Both share Indie, Casual on Steam.
- Heart (2024) is 1 year older than Don't kill the fish (2025).
- Heart is currently ~50% cheaper on Steam than Don't kill the fish (0.99 USD vs. 1.99 USD).
Heart vs Don't kill the fish — FAQ
- Should I play Heart or Don't kill the fish first?
- If you want chronology, Heart (2024) came out before Don't kill the fish (2025). 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 Heart and Don't kill the fish 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.