Choose Nightmare Within
Choose Nightmare Within if you want a Simulation experience.
Nightmare Within vs Trials of Mary
Nightmare Within and Trials of Mary both land in Action, Indie, Adventure 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 Action, Indie, Adventure on Steam. 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 Trials of Mary
Choose Trials of Mary if you want the Steam Input API Support, HDR available, and Save Anytime side of the pairing.
Both Nightmare Within and Trials of Mary sit in Action, Indie, and Adventure on Steam and both list DualShock Controller Support, DualSense Controller Support, and Adjustable Text Size, 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
 Nightmare Within |  Trials of Mary | |
|---|---|---|
| Released | — | — |
| Genres | Action, Indie, Adventure, Simulation | Action, Indie, Adventure |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Price unknown | Price unknown |
| Steam reviews | — | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | David Pankov | Nerdz Studio |
Side by side
- Both share Action, Indie, Adventure on Steam.
Nightmare Within vs Trials of Mary — FAQ
- Are Nightmare Within and Trials of Mary similar?
- They overlap on Action, Indie, Adventure 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.