Choose Theory of Fear
Choose Theory of Fear if you want a Simulation, Sexual Content, and Nudity experience. On Steam, it's currently about 22% cheaper on the Steam Store. Theory of Fear launched in 2017.
Theory of Fear vs A Day in the Life of Maria
Theory of Fear and A Day in the Life of Maria 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. Theory of Fear (2017) is 2 years older than A Day in the Life of Maria (2019). Theory of Fear is currently ~22% cheaper on Steam than A Day in the Life of Maria (6.99 USD vs. 8.99 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 A Day in the Life of Maria
Choose A Day in the Life of Maria if it matches what drew you to this matchup. A Day in the Life of Maria launched in 2019.
Both Theory of Fear and A Day in the Life of Maria 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
 Theory of Fear |  A Day in the Life of Maria | |
|---|---|---|
| Released | 2017 | 2019 |
| Genres | Indie, Adventure, Simulation, Casual, Sexual Content, Nudity, Violent | Indie, Adventure, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 6.99 USD | 8.99 USD |
| Steam reviews | 69.2% positive (39 reviews) | 2 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | ANASTASI SUKHONOSOVA | OTUSUN CLUB |
Side by side
- Both share Indie, Adventure, Casual on Steam.
- Theory of Fear (2017) is 2 years older than A Day in the Life of Maria (2019).
- Theory of Fear is currently ~22% cheaper on Steam than A Day in the Life of Maria (6.99 USD vs. 8.99 USD).
- Theory of Fear is Deck Playable on Steam Deck; A Day in the Life of Maria has no Deck rating yet.
Theory of Fear vs A Day in the Life of Maria — FAQ
- Should I play Theory of Fear or A Day in the Life of Maria first?
- If you want chronology, Theory of Fear (2017) came out before A Day in the Life of Maria (2019). 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 Theory of Fear and A Day in the Life of Maria 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.
- Does Theory of Fear run on Steam Deck?
- Yes — Theory of Fear is rated Deck Playable by Valve. A Day in the Life of Maria doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.