Choose Subsurface Circular
Choose Subsurface Circular if you want an Adventure experience. 1,353 Steam reviews back the pick.
Subsurface Circular vs The Sinner of the Closed Set
Subsurface Circular and The Sinner of the Closed Set 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. Subsurface Circular is Deck Playable on Steam Deck; The Sinner of the Closed Set has no Deck rating yet. 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 Sinner of the Closed Set
Choose The Sinner of the Closed Set if you want a RPG game with Playable without Timed Input and #category_playable_at_your_own_pace.
Both Subsurface Circular and The Sinner of the Closed Set 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
 Subsurface Circular |  The Sinner of the Closed Set | |
|---|---|---|
| Released | 2017 | — |
| Genres | Indie, Adventure, Casual | Indie, RPG, Casual |
| Platforms | Windows, macOS | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 2.99 USD | Price unknown |
| Steam reviews | 94.9% positive (1,353 reviews) | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Bithell Games | Kai DeJesus, Adriane Raff Corwin, Despoina Blair, Shreesha Yelameli |
Side by side
- Both share Indie, Casual on Steam.
- Subsurface Circular is Deck Playable on Steam Deck; The Sinner of the Closed Set has no Deck rating yet.
Subsurface Circular vs The Sinner of the Closed Set — FAQ
- Are Subsurface Circular and The Sinner of the Closed Set 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.
- Does Subsurface Circular run on Steam Deck?
- Yes — Subsurface Circular is rated Deck Playable by Valve. The Sinner of the Closed Set doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.