Choose Agatha Christie - The ABC Murders
Choose Agatha Christie - The ABC Murders if it's currently about 93% cheaper on the Steam Store. Agatha Christie - The ABC Murders launched in 2016.
Agatha Christie - The ABC Murders vs The Posthumous Investigation
Agatha Christie - The ABC Murders and The Posthumous Investigation 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. Agatha Christie - The ABC Murders (2016) is 10 years older than The Posthumous Investigation (2026). The Posthumous Investigation scores higher on Steam reviews (89.6% positive) than Agatha Christie - The ABC Murders (77.7% positive). 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 The Posthumous Investigation
Choose The Posthumous Investigation if you want an Indie and Casual experience. On Steam, it's the newer release (2026) and ships with the modern feature baseline. The Posthumous Investigation launched in 2026.
Both Agatha Christie - The ABC Murders and The Posthumous Investigation 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
 Agatha Christie - The ABC Murders |  The Posthumous Investigation | |
|---|---|---|
| Released | 2016 | 2026 |
| Genres | Adventure | Indie, Adventure, Casual |
| Platforms | Windows, macOS, Linux | Windows, macOS |
| Steam Deck | Deck Playable | Deck Playable |
| Price | 1.49 USD | 19.99 USD |
| Steam reviews | 77.7% positive (898 reviews) | 89.6% positive (48 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Artefacts Studio | Mother Gaia Studio |
Side by side
- Both are Adventure games on Steam.
- Agatha Christie - The ABC Murders (2016) is 10 years older than The Posthumous Investigation (2026).
- The Posthumous Investigation scores higher on Steam reviews (89.6% positive) than Agatha Christie - The ABC Murders (77.7% positive).
- Agatha Christie - The ABC Murders is currently ~93% cheaper on Steam than The Posthumous Investigation (1.49 USD vs. 19.99 USD).
- Both are Deck Playable.
Agatha Christie - The ABC Murders vs The Posthumous Investigation — FAQ
- Should I play Agatha Christie - The ABC Murders or The Posthumous Investigation first?
- If you want chronology, Agatha Christie - The ABC Murders (2016) came out before The Posthumous Investigation (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 Agatha Christie - The ABC Murders and The Posthumous Investigation 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.