Choose The Case Book of Arne
Choose The Case Book of Arne if you want an Indie experience. The Case Book of Arne launched in 2020.
The Case Book of Arne vs Mysterious Mystery, EP 1: The Duo Dilemma
The Case Book of Arne and Mysterious Mystery, EP 1: The Duo Dilemma both land in Adventure, RPG 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 Adventure, RPG on Steam. The Case Book of Arne (2020) is 5 years older than Mysterious Mystery, EP 1: The Duo Dilemma (2025). Mysterious Mystery, EP 1: The Duo Dilemma is currently ~50% cheaper on Steam than The Case Book of Arne (4.99 USD vs. 9.99 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 Mysterious Mystery, EP 1: The Duo Dilemma
Choose Mysterious Mystery, EP 1: The Duo Dilemma if you want a Casual experience. On Steam, it's currently about 50% cheaper on the Steam Store. Mysterious Mystery, EP 1: The Duo Dilemma launched in 2025.
Both The Case Book of Arne and Mysterious Mystery, EP 1: The Duo Dilemma sit in Adventure and RPG 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 Case Book of Arne |  Mysterious Mystery, EP 1: The Duo Dilemma | |
|---|---|---|
| Released | 2020 | 2025 |
| Genres | Indie, Adventure, RPG | Adventure, RPG, Casual |
| Platforms | Windows | Windows, macOS, Linux |
| Steam Deck | Unrated | Unrated |
| Price | 9.99 USD | 4.99 USD |
| Steam reviews | 91.7% positive (84 reviews) | 3 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | Vaka Game Magazine, HARUMURASAKI | Walker Sheets |
Side by side
- Both share Adventure, RPG on Steam.
- The Case Book of Arne (2020) is 5 years older than Mysterious Mystery, EP 1: The Duo Dilemma (2025).
- Mysterious Mystery, EP 1: The Duo Dilemma is currently ~50% cheaper on Steam than The Case Book of Arne (4.99 USD vs. 9.99 USD).
The Case Book of Arne vs Mysterious Mystery, EP 1: The Duo Dilemma — FAQ
- Should I play The Case Book of Arne or Mysterious Mystery, EP 1: The Duo Dilemma first?
- If you want chronology, The Case Book of Arne (2020) came out before Mysterious Mystery, EP 1: The Duo Dilemma (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 Case Book of Arne and Mysterious Mystery, EP 1: The Duo Dilemma similar?
- They overlap on Adventure, RPG 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.