Choose Project Blue Book: Hidden Mysteries
Choose Project Blue Book: Hidden Mysteries if you want an Indie and Casual experience. On Steam, it's currently about 72% cheaper on the Steam Store. Project Blue Book: Hidden Mysteries launched in 2021.
Project Blue Book: Hidden Mysteries vs The House of Tesla: Definitive Edition
Project Blue Book: Hidden Mysteries and The House of Tesla: Definitive Edition both land in 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 are Adventure games on Steam. Project Blue Book: Hidden Mysteries (2021) is 4 years older than The House of Tesla: Definitive Edition (2025). Project Blue Book: Hidden Mysteries is currently ~72% cheaper on Steam than The House of Tesla: Definitive Edition (6.99 USD vs. 24.99 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 The House of Tesla: Definitive Edition
Choose The House of Tesla: Definitive Edition if you want the Adjustable Text Size, Custom Volume Controls, and Stereo Sound side of the pairing. On Steam, it's the newer release (2025) and ships with the modern feature baseline. The House of Tesla: Definitive Edition launched in 2025.
Both Project Blue Book: Hidden Mysteries and The House of Tesla: Definitive Edition sit in 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
 Project Blue Book: Hidden Mysteries |  The House of Tesla: Definitive Edition | |
|---|---|---|
| Released | 2021 | 2025 |
| Genres | Indie, Adventure, Casual | Adventure |
| Platforms | Windows | Windows, Linux |
| Steam Deck | Unrated | Deck Verified |
| Price | 6.99 USD | 24.99 USD |
| Steam reviews | 3 reviews | 69.5% positive (476 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Three Gates | Blue Brain Games |
Side by side
- Both are Adventure games on Steam.
- Project Blue Book: Hidden Mysteries (2021) is 4 years older than The House of Tesla: Definitive Edition (2025).
- Project Blue Book: Hidden Mysteries is currently ~72% cheaper on Steam than The House of Tesla: Definitive Edition (6.99 USD vs. 24.99 USD).
- The House of Tesla: Definitive Edition is Deck Verified on Steam Deck; Project Blue Book: Hidden Mysteries has no Deck rating yet.
Project Blue Book: Hidden Mysteries vs The House of Tesla: Definitive Edition — FAQ
- Should I play Project Blue Book: Hidden Mysteries or The House of Tesla: Definitive Edition first?
- If you want chronology, Project Blue Book: Hidden Mysteries (2021) came out before The House of Tesla: Definitive Edition (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 Project Blue Book: Hidden Mysteries and The House of Tesla: Definitive Edition similar?
- They overlap on 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.