Choose ONE.
Choose ONE. if it matches what drew you to this matchup. ONE. launched in 2023.
ONE. vs ToHeart
ONE. and ToHeart both land in Adventure, Simulation 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, Simulation on Steam. ONE. (2023) is 2 years older than ToHeart (2025). ToHeart scores higher on Steam reviews (89.3% positive) than ONE. (83.3% 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 ToHeart
Choose ToHeart if it's Steam Deck Verified, so handheld play works out of the box. ToHeart launched in 2025.
Both ONE. and ToHeart sit in Adventure and Simulation 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
 ONE. |  ToHeart | |
|---|---|---|
| Released | 2023 | 2025 |
| Genres | Adventure, Simulation | Adventure, Simulation |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Deck Verified |
| Price | 19.99 USD | 19.99 USD |
| Steam reviews | 83.3% positive (72 reviews) | 89.3% positive (75 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | novamicus | AQUAPLUS |
Side by side
- Both share Adventure, Simulation on Steam.
- ONE. (2023) is 2 years older than ToHeart (2025).
- ToHeart scores higher on Steam reviews (89.3% positive) than ONE. (83.3% positive).
- ToHeart is currently ~0% cheaper on Steam than ONE. (19.99 USD vs. 19.99 USD).
- Steam Deck: ONE. is Deck Playable, ToHeart is Deck Verified.
ONE. vs ToHeart — FAQ
- Should I play ONE. or ToHeart first?
- If you want chronology, ONE. (2023) came out before ToHeart (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 ONE. and ToHeart similar?
- They overlap on Adventure, Simulation 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.