Free Investigation Games on Steam
Steam currently has 3,067 Investigation games available to download and play. Explore our list of the best free games ranked by popularity and ratings. Data for this list is calculated from reviews and player counts reported directly by Steam and will be updated in real-time. Free Investigation game rankings were last updated on 7/5/2025.
Looking for more? Explore other lists such as:
- Best investigation games on Steam
- Best investigation Steam Deck games
- Best investigation Steam games for Mac OS
- Best investigation Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. We Were Here
Lost in a frozen wasteland and split up from your partner inside an abandoned castle, the only possession you have left is a walkie-talkie with a familiar voice on the other end. Can the two of you find your way out in time?
We Were Here holds the #1 spot for "best free Investigation game on Steam" with a Player Score of 88. Its score was calculated by analyzing a total of 30,190 reviews on Steam. This breaks down to a total of 27,170 positive reviews and 3,020 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is possible to play We Were Here on the Steam Deck (though some functionality may be limited).
| Release Date | 2/3/2017 |
| Franchise | Total Mayhem Games |
| Developer | Total Mayhem Games |
| Publisher | Total Mayhem Games |
| Steam App Id | 582500 |
2. Adventure Escape Mysteries
Play a story-driven room escape game with unique puzzles enjoyed by tens of millions of players. Solve mysteries, puzzle through escape rooms, and find the clue that will crack the case in a critically acclaimed puzzle adventure game!
Adventure Escape Mysteries has achieved a Player Score of 82, placing it in the #2 spot for the best free Investigation games. Its score was calculated by analyzing a total of 954 reviews on Steam. This breaks down to a total of 825 positive reviews and 129 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Adventure Escape Mysteries on the Steam Deck (though some functionality may be limited).
| Release Date | 5/5/2020 |
| Developer | Haiku Games Co |
| Publisher | Haiku Games Co |
| Steam App Id | 1141020 |
3. 买个可乐饼吧！ - Buy a Croquette!
March 2012, Nagano. The smart and brave high school girl, Chio Aozora, is facing a major crisis: she has no money to buy a croquette! Navigate through the streets and alleys of Nagano, interact with a variety of characters, solve complex puzzles, collect 380 yen in coins, and buy a croquette!
买个可乐饼吧！ - Buy a Croquette! has achieved a Player Score of 95, placing it in the #3 spot for the best free Investigation games. Its score was calculated by analyzing a total of 4,646 reviews on Steam. This breaks down to a total of 4,597 positive reviews and 49 negative reviews — making it "Overwhelmingly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play 买个可乐饼吧！ - Buy a Croquette! on the Steam Deck (though some functionality may be limited).
| Release Date | 4/27/2024 |
| Developer | 越青 |
| Publisher | Eternal Dream |
| Steam App Id | 2167960 |
4. Contraband Police: Prologue
Take over the duties of a border guard inspector in a communist country of the 80's. Smuggling, corruption and forgery are the order of the day here. Be vigilant and earn the respect of your superiors.
Contraband Police: Prologue has achieved a Player Score of 86, placing it in the #4 spot for the best free Investigation games. Its score was calculated by analyzing a total of 7,264 reviews on Steam. This breaks down to a total of 6,471 positive reviews and 793 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Contraband Police: Prologue on the Steam Deck (though some functionality may be limited).
| Release Date | 2/16/2021 |
| Developer | Crazy Rocks |
| Publishers | |
| Steam App Id | 1396240 |
5. Unsolved Case
A new lead turns up old doubts about an 'Unsolved Case'. A trap, or a copycat killer? In this co-op puzzle game prequel to the award-winning Cryptic Killer series, put on your detective badges as you collaborate and communicate to crack the codes, solve the riddles, and catch the Cryptic Killer.
Unsolved Case has achieved a Player Score of 85, placing it in the #5 spot for the best free Investigation games. Its score was calculated by analyzing a total of 5,763 reviews on Steam. This breaks down to a total of 5,068 positive reviews and 695 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 11/24/2022 |
| Franchise | Eleven Puzzles |
| Developer | Eleven Puzzles |
| Publisher | Eleven Puzzles |
| Steam App Id | 2084050 |
6. Escape Room - Der kranke Kollege
You only wanted to make a visit to your sick colleague, but what you encounter is beyond your imagination. Discover the secrets of your colleague and find a way to escape the trap.
Escape Room - Der kranke Kollege has achieved a Player Score of 80, placing it in the #6 spot for the best free Investigation games. Its score was calculated by analyzing a total of 12,177 reviews on Steam. This breaks down to a total of 9,911 positive reviews and 2,266 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Escape Room - Der kranke Kollege on the Steam Deck (though some functionality may be limited).
| Release Date | 9/5/2020 |
| Developer | Bitbeast Games |
| Publisher | Bitbeast Games |
| Steam App Id | 1301720 |
7. Operation: Tango - Friend Pass
Download the Friend Pass and play for free with a friend who owns the full Operation: Tango game. It takes two to save the world, but it only takes one to pay for it.
Operation: Tango - Friend Pass has achieved a Player Score of 82, placing it in the #7 spot for the best free Investigation games. Its score was calculated by analyzing a total of 2,078 reviews on Steam. This breaks down to a total of 1,789 positive reviews and 289 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Operation: Tango - Friend Pass on the Steam Deck.
| Release Date | 8/28/2020 |
| Developer | Clever Plays |
| Publisher | Clever Plays |
| Steam App Id | 1377150 |
8. H.I.A: Horror Investigation Agency
H.I.A: Horror Investigation Agency is a fun multiplayer horror game in which you and co-players have to investigate exciting horror cases. Among finding victims and evidence of the horror event that has taken place, you will be faced with jumpscares and scary monsters along your investigation.
H.I.A: Horror Investigation Agency has achieved a Player Score of 50, placing it in the #8 spot for the best free Investigation games. Its score was calculated by analyzing a total of 326 reviews on Steam. This breaks down to a total of 163 positive reviews and 163 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
9. Hello Neighbor Alpha 4
Alpha 4 of Hello Neighbor was the final alpha during the stealth hit's development. Sneak into your creepy Neighbor's house to figure out what he's hiding.
Hello Neighbor Alpha 4 has achieved a Player Score of 82, placing it in the #9 spot for the best free Investigation games. Its score was calculated by analyzing a total of 5,054 reviews on Steam. This breaks down to a total of 4,274 positive reviews and 780 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Hello Neighbor Alpha 4 on the Steam Deck (though some functionality may be limited).
| Release Date | 10/19/2019 |
| Franchise | Hello Neighbor Game |
| Developer | Dynamic Pixels |
| Publisher | tinyBuild |
| Steam App Id | 1096710 |
10. Hello Neighbor Alpha 2
Welcome to Alpha 2 of Hello Neighbor. Play against an advanced, self-learning AI in what eventually became Act 1 of Hello Neighbor - the stealth horror home invasion sim.
Hello Neighbor Alpha 2 has achieved a Player Score of 91, placing it in the #10 spot for the best free Investigation games. Its score was calculated by analyzing a total of 3,970 reviews on Steam. This breaks down to a total of 3,753 positive reviews and 217 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Hello Neighbor Alpha 2 on the Steam Deck.
| Release Date | 10/15/2019 |
| Franchise | Hello Neighbor Game |
| Developer | Dynamic Pixels |
| Publisher | tinyBuild |
| Steam App Id | 1092720 |
More Free Investigation Games
Explore even more rankings for the 100 best free Investigation games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 159 | 2/3/2017 | 88 | Free | Steam Charts | |
| 72 | 5/5/2020 | 82 | Free | Steam Charts | |
| 66 | 4/27/2024 | 95 | Free | Steam Charts | |
| 60 | 2/16/2021 | 86 | Free | Steam Charts | |
| 57 | 11/24/2022 | 85 | Free | Steam Charts | |
| 43 | 9/5/2020 | 80 | Free | Steam Charts | |
| 35 | 8/28/2020 | 82 | Free | Steam Charts | |
| 30 | 2/28/2024 | 50 | Free | Steam Charts | |
| 26 | 10/19/2019 | 82 | Free | Steam Charts | |
| 24 | 10/15/2019 | 91 | Free | Steam Charts | |
 | 19 | 9/30/2022 | 82 | Free | Steam Charts | |
 | 18 | 1/31/2023 | 85 | Free | Steam Charts | |
 | 18 | 6/15/2022 | 77 | Free | Steam Charts | |
 | 18 | 4/27/2016 | 57 | Free | Steam Charts | |
 | 15 | 7/23/2020 | 84 | Free | Steam Charts | |
 | 15 | 10/12/2019 | 89 | Free | Steam Charts | |
 | 13 | 8/7/2023 | 90 | Free | Steam Charts | |
 | 13 | 10/15/2024 | 45 | Free | Steam Charts | |
 | 9 | 12/29/2020 | 81 | Free | Steam Charts | |
 | 8 | 10/10/2019 | 87 | Free | Steam Charts |
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Player counts and rankings are enriched, analyzed, and updated in real-time to ensure we surface the most up-to-date insights. Learn more about the Steambase approach to data collection and our review methodology.
- Valve Corporation. (2025, July 5). Steam Store. Steam Store.
- Valve Corporation. (2025, July 5). We Were Here on Steam. Steam Store.
- Valve Corporation. (2025, May 19). Adventure Escape Mysteries on Steam. Steam Store.
- Valve Corporation. (2025, June 26). 买个可乐饼吧！ - Buy a Croquette! on Steam. Steam Store.
- Valve Corporation. (2025, May 21). Contraband Police: Prologue on Steam. Steam Store.
- Valve Corporation. (2025, June 26). Unsolved Case on Steam. Steam Store.
- Valve Corporation. (2025, June 24). Escape Room - Der kranke Kollege on Steam. Steam Store.
- Valve Corporation. (2025, July 2). Operation: Tango - Friend Pass on Steam. Steam Store.
- Valve Corporation. (2025, June 25). H.I.A: Horror Investigation Agency on Steam. Steam Store.
- Valve Corporation. (2025, July 3). Hello Neighbor Alpha 4 on Steam. Steam Store.
- Valve Corporation. (2025, July 4). Hello Neighbor Alpha 2 on Steam. Steam Store.