O.C.D. - On Completeness & Dissonance vs One Line: Letters and Codes
O.C.D. - On Completeness & Dissonance and One Line: Letters and Codes 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. O.C.D. - On Completeness & Dissonance (2018) is 4 years older than One Line: Letters and Codes (2022). One Line: Letters and Codes is currently ~20% cheaper on Steam than O.C.D. - On Completeness & Dissonance (0.79 USD vs. 0.99 USD). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Side-by-side comparison
 O.C.D. - On Completeness & Dissonance |  One Line: Letters and Codes | |
|---|---|---|
| Released | 2018 | 2022 |
| Genres | Indie, Casual | Indie, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 0.99 USD | 0.79 USD |
| Steam reviews | — | 92.9% positive (28 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Flat Voxel | Climbing Goat Games |
Side by side
- Both share Indie, Casual on Steam.
- O.C.D. - On Completeness & Dissonance (2018) is 4 years older than One Line: Letters and Codes (2022).
- One Line: Letters and Codes is currently ~20% cheaper on Steam than O.C.D. - On Completeness & Dissonance (0.79 USD vs. 0.99 USD).
O.C.D. - On Completeness & Dissonance vs One Line: Letters and Codes — FAQ
- Should I play O.C.D. - On Completeness & Dissonance or One Line: Letters and Codes first?
- If you want chronology, O.C.D. - On Completeness & Dissonance (2018) came out before One Line: Letters and Codes (2022). 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 O.C.D. - On Completeness & Dissonance and One Line: Letters and Codes 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.