Choose Subsurface Circular
Choose Subsurface Circular if it's currently about 85% cheaper on the Steam Store. 1,353 Steam reviews back the pick.
Subsurface Circular vs The Posthumous Investigation
Subsurface Circular and The Posthumous Investigation both land in Indie, Adventure, 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, Adventure, Casual on Steam. Subsurface Circular (2017) is 9 years older than The Posthumous Investigation (2026). Subsurface Circular scores higher on Steam reviews (94.9% positive) than The Posthumous Investigation (89.6% 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 it's the newer release (2026) and ships with the modern feature baseline. The Posthumous Investigation launched in 2026.
Both Subsurface Circular and The Posthumous Investigation sit in Indie, Adventure, 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
 Subsurface Circular |  The Posthumous Investigation | |
|---|---|---|
| Released | 2017 | 2026 |
| Genres | Indie, Adventure, Casual | Indie, Adventure, Casual |
| Platforms | Windows, macOS | Windows, macOS |
| Steam Deck | Deck Playable | Deck Playable |
| Price | 2.99 USD | 19.99 USD |
| Steam reviews | 94.9% positive (1,353 reviews) | 89.6% positive (48 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Bithell Games | Mother Gaia Studio |
Side by side
- Both share Indie, Adventure, Casual on Steam.
- Subsurface Circular (2017) is 9 years older than The Posthumous Investigation (2026).
- Subsurface Circular scores higher on Steam reviews (94.9% positive) than The Posthumous Investigation (89.6% positive).
- Subsurface Circular is currently ~85% cheaper on Steam than The Posthumous Investigation (2.99 USD vs. 19.99 USD).
- Both are Deck Playable.
Subsurface Circular vs The Posthumous Investigation — FAQ
- Should I play Subsurface Circular or The Posthumous Investigation first?
- If you want chronology, Subsurface Circular (2017) 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 Subsurface Circular and The Posthumous Investigation similar?
- They overlap on Indie, Adventure, 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.