Choose The World of a Mermaid
Choose The World of a Mermaid if you want a Sports, Indie, and Simulation experience. On Steam, it's currently about 98% cheaper on the Steam Store. The World of a Mermaid launched in 2022.
The World of a Mermaid vs 夏目友人帳 ～葉月の記～
The World of a Mermaid and 夏目友人帳 ～葉月の記～ both land in 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 are Adventure games on Steam. The World of a Mermaid (2022) is 3 years older than 夏目友人帳 ～葉月の記～ (2025). The World of a Mermaid is currently ~98% cheaper on Steam than 夏目友人帳 ～葉月の記～ (0.99 USD vs. 49.99 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 夏目友人帳 ～葉月の記～
Choose 夏目友人帳 ～葉月の記～ if it's the newer release (2025) and ships with the modern feature baseline. 夏目友人帳 ～葉月の記～ launched in 2025.
Both The World of a Mermaid and 夏目友人帳 ～葉月の記～ sit in Adventure 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
 The World of a Mermaid |  夏目友人帳 ～葉月の記～ | |
|---|---|---|
| Released | 2022 | 2025 |
| Genres | Sports, Indie, Adventure, Simulation, Casual | Adventure |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Deck Verified |
| Price | 0.99 USD | 49.99 USD |
| Steam reviews | 8 reviews | 4 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | — | Toydium |
Side by side
- Both are Adventure games on Steam.
- The World of a Mermaid (2022) is 3 years older than 夏目友人帳 ～葉月の記～ (2025).
- The World of a Mermaid is currently ~98% cheaper on Steam than 夏目友人帳 ～葉月の記～ (0.99 USD vs. 49.99 USD).
- 夏目友人帳 ～葉月の記～ is Deck Verified on Steam Deck; The World of a Mermaid has no Deck rating yet.
The World of a Mermaid vs 夏目友人帳 ～葉月の記～ — FAQ
- Should I play The World of a Mermaid or 夏目友人帳 ～葉月の記～ first?
- If you want chronology, The World of a Mermaid (2022) came out before 夏目友人帳 ～葉月の記～ (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 The World of a Mermaid and 夏目友人帳 ～葉月の記～ similar?
- They overlap on 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.