Choose Biotoxin: The Dark Days
Choose Biotoxin: The Dark Days if it matches what drew you to this matchup. Biotoxin: The Dark Days launched in 2017.
Biotoxin: The Dark Days vs MYSTERY HOUSE : SECRET STEALTH
Biotoxin: The Dark Days and MYSTERY HOUSE : SECRET STEALTH 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. Biotoxin: The Dark Days (2017) is 1 year older than MYSTERY HOUSE : SECRET STEALTH (2018). MYSTERY HOUSE : SECRET STEALTH is currently ~0% cheaper on Steam than Biotoxin: The Dark Days (2.99 USD vs. 2.99 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 MYSTERY HOUSE : SECRET STEALTH
Choose MYSTERY HOUSE : SECRET STEALTH if you want a Strategy, Simulation, and RPG experience. MYSTERY HOUSE : SECRET STEALTH launched in 2018.
Both Biotoxin: The Dark Days and MYSTERY HOUSE : SECRET STEALTH sit in Action, Indie, and Adventure 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
 Biotoxin: The Dark Days |  MYSTERY HOUSE : SECRET STEALTH | |
|---|---|---|
| Released | 2017 | 2018 |
| Genres | Action, Indie, Adventure, Violent, Gore | Action, Strategy, Indie, Adventure, Simulation, RPG, Violent, Gore, Racing |
| Platforms | Windows | Windows, macOS |
| Steam Deck | Unrated | Unrated |
| Price | 2.99 USD | 2.99 USD |
| Steam reviews | 70% positive (10 reviews) | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Fivesyounger Development | NK CREATIV TEAM |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Biotoxin: The Dark Days (2017) is 1 year older than MYSTERY HOUSE : SECRET STEALTH (2018).
- MYSTERY HOUSE : SECRET STEALTH is currently ~0% cheaper on Steam than Biotoxin: The Dark Days (2.99 USD vs. 2.99 USD).
Biotoxin: The Dark Days vs MYSTERY HOUSE : SECRET STEALTH — FAQ
- Should I play Biotoxin: The Dark Days or MYSTERY HOUSE : SECRET STEALTH first?
- If you want chronology, Biotoxin: The Dark Days (2017) came out before MYSTERY HOUSE : SECRET STEALTH (2018). 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 Biotoxin: The Dark Days and MYSTERY HOUSE : SECRET STEALTH 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.