Choose Oni Onsen
Choose Oni Onsen if you want the Chat Text-to-speech and Keyboard Only Option side of the pairing. Oni Onsen launched in 2025.
Oni Onsen vs Past Mistakes - Act I
Oni Onsen and Past Mistakes - Act I both land in 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 are Simulation games on Steam. Both released in 2025. Past Mistakes - Act I is currently ~55% cheaper on Steam than Oni Onsen (8.99 USD vs. 19.99 USD). 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 Past Mistakes - Act I
Choose Past Mistakes - Act I if you want an Indie, Casual, and Early Access game with Subtitle Options. On Steam, it's currently about 55% cheaper on the Steam Store. Past Mistakes - Act I launched in 2025.
Both Oni Onsen and Past Mistakes - Act I sit in Simulation on Steam and both list Adjustable Text Size, Custom Volume Controls, and Playable without Timed Input, 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
 Oni Onsen |  Past Mistakes - Act I | |
|---|---|---|
| Released | 2025 | 2025 |
| Genres | Simulation | Indie, Simulation, Casual, Early Access |
| Platforms | Windows, macOS, Linux | Windows, macOS, Linux |
| Steam Deck | Deck Playable | Deck Playable |
| Price | 19.99 USD | 8.99 USD |
| Steam reviews | 8 reviews | 4 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | Y Press Games | Cock-N-Tiel Studios |
Side by side
- Both are Simulation games on Steam.
- Both released in 2025.
- Past Mistakes - Act I is currently ~55% cheaper on Steam than Oni Onsen (8.99 USD vs. 19.99 USD).
- Both are Deck Playable.
Oni Onsen vs Past Mistakes - Act I — FAQ
- Are Oni Onsen and Past Mistakes - Act I similar?
- They overlap on 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.