Free Underground Games on Steam
Steam currently has 666 Underground 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 Underground game rankings were last updated on 11/7/2024.
Looking for more? Explore other lists such as:
- Best underground games on Steam
- Best underground Steam Deck games
- Best underground Steam games for Mac OS
- Best underground Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Underworld Idle
An idle dungeon management game, where high tier units can create low tier units.
Underworld Idle holds the #1 spot for "best free Underground game on Steam" with a Player Score of 69. Its score was calculated by analyzing a total of 1,074 reviews on Steam. This breaks down to a total of 774 positive reviews and 300 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Underworld Idle on the Steam Deck (though some functionality may be limited).
| Release Date | 2/2/2023 |
| Developer | Aleksandr Golovkin |
| Publisher | Aleksandr Golovkin |
| Steam App Id | 1540960 |
2. Otherworld Legends 战魂铭人
A "blood-pumping, face-bashing" roguelike brawler. Master heroes of your choice, craft uniquely broken builds, and hack & pummel through a myriad of dungeons in a thrilling rampage.
Otherworld Legends 战魂铭人 has achieved a Player Score of 56, placing it in the #2 spot for the best free Underground games. Its score was calculated by analyzing a total of 948 reviews on Steam. This breaks down to a total of 544 positive reviews and 404 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.
| Release Date | 4/28/2022 |
| Developer | ChillyRoom |
| Publisher | ChillyRoom |
| Steam App Id | 1761380 |
3. Cave Crawlers
Cave Crawlers is a 1-10 player rogue lite set deep underground in a system of randomly generated caves. Players use weapons, spells, and talents to defeat the unique bosses and enemies found in each biome.
Cave Crawlers has achieved a Player Score of 89, placing it in the #3 spot for the best free Underground games. Its score was calculated by analyzing a total of 2,430 reviews on Steam. This breaks down to a total of 2,269 positive reviews and 161 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 Cave Crawlers on the Steam Deck (though some functionality may be limited).
| Release Date | 7/10/2023 |
| Developer | Heroic Pyxel LLC |
| Publisher | Heroic Pyxel LLC |
| Steam App Id | 2143030 |
4. Hexagon Knockout
Hexagon Knockout is a multiplayer bumper car game where the objective is to knock out your opponents. You control a vehicle capable of firing rockets using its cannon at the rear. Play all the different game modes, offline as well as online.
Hexagon Knockout has achieved a Player Score of 79, placing it in the #4 spot for the best free Underground games. Its score was calculated by analyzing a total of 137 reviews on Steam. This breaks down to a total of 120 positive reviews and 17 negative reviews — making it "Very Positive" 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.
| Release Date | 8/31/2021 |
| Developers | |
| Publisher | Mox Games |
| Steam App Id | 1629100 |
5. Mr. Prepper: Prologue
Mr. Prepper: Prologue is a free standalone version of the game Mr. Prepper, featuring an essential part of the story.
Mr. Prepper: Prologue has achieved a Player Score of 80, placing it in the #5 spot for the best free Underground games. Its score was calculated by analyzing a total of 2,515 reviews on Steam. This breaks down to a total of 2,092 positive reviews and 423 negative reviews — making it "Very Positive" 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.
| Release Date | 8/27/2020 |
| Franchise | Rejected Games |
| Developer | Rejected Games |
| Publishers | |
| Steam App Id | 1340530 |
6. 頭痛
頭痛【資料館編】 行方不明者を探しに資料館へ... 廃墟の資料館に隠された謎を解く一人称視点の探索系ホラーゲームです。
頭痛 has achieved a Player Score of 68, placing it in the #6 spot for the best free Underground games. Its score was calculated by analyzing a total of 189 reviews on Steam. This breaks down to a total of 137 positive reviews and 52 negative reviews — making it "Mostly Positive" 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.
7. Molementum
Molementum is a 3D party action game where you assume the role of a mole criminal to rob mines of their precious gems. Grab up to 3 friends and scramble your way through mines while engaging in various acts of competitive mischief as you try to become the most notorious mole criminal.
Molementum has achieved a Player Score of 69, placing it in the #7 spot for the best free Underground games. Its score was calculated by analyzing a total of 21 reviews on Steam. This breaks down to a total of 17 positive reviews and 4 negative reviews — making it "Positive" 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.
| Release Date | 5/3/2024 |
| Developer | Plushie Bomb Studios |
| Publisher | Plushie Bomb Studios |
| Steam App Id | 2841830 |
8. Drugs and Crime Idle
Behind every great fortune, lies a great crime! Sell drugs, attack with your gang, gamble your CrimeCoins away and hope, that you get that rare item, finally. Free-to-play. Offline Progression. No Microtransactions except 2 optional DLCs.
Drugs and Crime Idle has achieved a Player Score of 65, placing it in the #8 spot for the best free Underground games. Its score was calculated by analyzing a total of 266 reviews on Steam. This breaks down to a total of 183 positive reviews and 83 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.
| Release Date | 12/11/2020 |
| Developers | |
| Publishers | |
| Steam App Id | 1481970 |
9. Towards Future
Waking up in the darkness, unable to see the sunrise, he remembered the little master carefully carried him home. The base has already fallen into ruin and there are no signs of any living people here. Where did the little master go? Is there any hope left under the doomsday?
Towards Future has achieved a Player Score of 92, placing it in the #9 spot for the best free Underground games. Its score was calculated by analyzing a total of 664 reviews on Steam. This breaks down to a total of 656 positive reviews and 8 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 Towards Future on the Steam Deck (though some functionality may be limited).
| Release Date | 2/18/2022 |
| Developer | 拾伍司工坊 |
| Publisher | Eternal Dream |
| Steam App Id | 1888010 |
10. KEEP LOOKING
This is a nerve-wracking horror game that puts you in a dark, claustrophobic cave with a relentless creature. Survive by flashing your dying flashlight at the right moments—too soon or too late, and it’s over. You must keep an eye on the creature, but beware: staring too long is just as deadly.
KEEP LOOKING has achieved a Player Score of 73, placing it in the #10 spot for the best free Underground games. Its score was calculated by analyzing a total of 19 reviews on Steam. This breaks down to a total of 17 positive reviews and 2 negative reviews — making it "Positive" on Steam.
It can be played and ran on both Windows and Linux systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
More Free Underground Games
Explore even more rankings for the 80 best free Underground games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 228 | 2/2/2023 | 69 | Free | Steam Charts | |
| 219 | 4/28/2022 | 56 | Free | Steam Charts | |
| 42 | 7/10/2023 | 89 | Free | Steam Charts | |
| 4 | 8/31/2021 | 79 | Free | Steam Charts | |
| 4 | 8/27/2020 | 80 | Free | Steam Charts | |
| 4 | 11/20/2021 | 68 | Free | Steam Charts | |
| 4 | 5/3/2024 | 69 | Free | Steam Charts | |
| 4 | 12/11/2020 | 65 | Free | Steam Charts | |
| 3 | 2/18/2022 | 92 | Free | Steam Charts | |
| 2 | 11/6/2024 | 73 | Free | Steam Charts | |
 | 2 | 9/23/2024 | 71 | Free | Steam Charts | |
 | 2 | 9/29/2022 | 63 | Free | Steam Charts | |
 | 2 | 8/16/2022 | 40 | Free | Steam Charts | |
 | 1 | 6/25/2024 | 72 | Free | Steam Charts | |
 | 1 | 1/24/2024 | 72 | Free | Steam Charts | |
 | 1 | 5/6/2022 | 75 | Free | Steam Charts | |
 | 1 | 8/5/2022 | 53 | Free | Steam Charts | |
 | 1 | 9/1/2020 | 81 | Free | Steam Charts | |
 | 1 | 8/14/2022 | 65 | Free | Steam Charts | |
 | 1 | 4/20/2023 | 74 | 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. (2024, November 7). Steam Store. Steam Store.
- Valve Corporation. (2024, November 7). Underworld Idle on Steam. Steam Store.
- Valve Corporation. (2024, November 12). Otherworld Legends 战魂铭人 on Steam. Steam Store.
- Valve Corporation. (2024, October 9). Cave Crawlers on Steam. Steam Store.
- Valve Corporation. (2024, September 19). Hexagon Knockout on Steam. Steam Store.
- Valve Corporation. (2024, September 18). Mr. Prepper: Prologue on Steam. Steam Store.
- Valve Corporation. (2024, October 8). 頭痛 on Steam. Steam Store.
- Valve Corporation. (2024, September 5). Molementum on Steam. Steam Store.
- Valve Corporation. (2024, September 4). Drugs and Crime Idle on Steam. Steam Store.
- Valve Corporation. (2024, October 25). Towards Future on Steam. Steam Store.
- Valve Corporation. (2024, November 14). KEEP LOOKING on Steam. Steam Store.