Free Underground Games on Steam
Steam currently has 707 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 1/12/2025.
Looking for more? Explore other lists such as:
- Best underground games on Steam
- Best underground Steam Deck games
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- 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 1,097 reviews on Steam. This breaks down to a total of 787 positive reviews and 310 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. 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 #2 spot for the best free Underground games. Its score was calculated by analyzing a total of 2,603 reviews on Steam. This breaks down to a total of 2,435 positive reviews and 168 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 |
3. 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 60, placing it in the #3 spot for the best free Underground games. Its score was calculated by analyzing a total of 2,000 reviews on Steam. This breaks down to a total of 1,222 positive reviews and 778 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 |
4. 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 #4 spot for the best free Underground games. Its score was calculated by analyzing a total of 268 reviews on Steam. This breaks down to a total of 184 positive reviews and 84 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 |
5. Rainbowcore Hypernova
Unleash your inner fighter in Rainbowcore Hypernova, the explosively fun and free fighting game featuring vibrant characters, easy controls, and dynamic battles
Rainbowcore Hypernova has achieved a Player Score of 74, placing it in the #5 spot for the best free Underground games. Its score was calculated by analyzing a total of 165 reviews on Steam. This breaks down to a total of 132 positive reviews and 33 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 Rainbowcore Hypernova on the Steam Deck (though some functionality may be limited).
| Release Date | 4/20/2023 |
| Developer | Nucko Games |
| Publisher | Nucko Games |
| Steam App Id | 2346510 |
6. Object N
A classic-style hardcore dynamic shooter which takes place in a science underground center.
Object N has achieved a Player Score of 81, placing it in the #6 spot for the best free Underground games. Its score was calculated by analyzing a total of 932 reviews on Steam. This breaks down to a total of 798 positive reviews and 134 negative reviews — making it "Very 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.
7. It's Dark
There has been a containment breach in a secret facility located deep underground. Experiment E.C.H.O has escaped and is running loose. The lab has gone into shutdown mode, and it's dark...
It's Dark has achieved a Player Score of 63, placing it in the #7 spot for the best free Underground games. Its score was calculated by analyzing a total of 69 reviews on Steam. This breaks down to a total of 47 positive reviews and 22 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 | 7/15/2022 |
| Developers | |
| Publisher | Connor Redwine |
| Steam App Id | 1994220 |
8. XBall
A real-time tactics PvP sports game with an underground vibe. Control every player on your team in fast-paced matches that blend basketball, football, and hockey. Customize the action with adjustable time pace and team sizes.
XBall has achieved a Player Score of 71, placing it in the #8 spot for the best free Underground games. Its score was calculated by analyzing a total of 5 reviews on Steam. This breaks down to a total of 5 positive reviews and 0 negative reviews — making it "5 user reviews" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 9/23/2024 |
| Developer | Anton Paramonov |
| Publisher | Anton Paramonov |
| Steam App Id | 2021070 |
9. 魔能纪元
An IDLE role-playing game
魔能纪元 has achieved a Player Score of 47, placing it in the #9 spot for the best free Underground games. Its score was calculated by analyzing a total of 59 reviews on Steam. This breaks down to a total of 27 positive reviews and 32 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 | 6/15/2022 |
| Developer | Fireball Studio |
| Publisher | Fireball Studio |
| Steam App Id | 1824840 |
10. Emerald Dreams: Sanity - Platformer Quest
Emerald Dreams: Sanity - Platformer Quest is an exciting 2.5D platformer and adventure Metroidvania that takes you on a journey through mysterious worlds. The game offers a rich story set in a dark fantasy universe where every decision you make can lead to one of multiple endings.
Emerald Dreams: Sanity - Platformer Quest has achieved a Player Score of 83, placing it in the #10 spot for the best free Underground games. Its score was calculated by analyzing a total of 82 reviews on Steam. This breaks down to a total of 78 positive reviews and 4 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 Emerald Dreams: Sanity - Platformer Quest on the Steam Deck (though some functionality may be limited).
| Release Date | 8/1/2024 |
| Developer | Involve Games |
| Publisher | INVOLVE IT SOFTWARE LLC |
| Steam App Id | 2987640 |
More Free Underground Games
Explore even more rankings for the 87 best free Underground games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 185 | 2/2/2023 | 69 | Free | Steam Charts | |
| 124 | 7/10/2023 | 89 | Free | Steam Charts | |
| 82 | 4/28/2022 | 60 | Free | Steam Charts | |
| 4 | 12/11/2020 | 65 | Free | Steam Charts | |
| 3 | 4/20/2023 | 74 | Free | Steam Charts | |
| 2 | 1/13/2021 | 81 | Free | Steam Charts | |
| 2 | 7/15/2022 | 63 | Free | Steam Charts | |
| 2 | 9/23/2024 | 71 | Free | Steam Charts | |
| 2 | 6/15/2022 | 47 | Free | Steam Charts | |
| 1 | 8/1/2024 | 83 | Free | Steam Charts | |
 | 1 | 1/28/2021 | 80 | Free | Steam Charts | |
 | 1 | 1/24/2024 | 72 | Free | Steam Charts | |
 | 1 | 5/6/2022 | 75 | Free | Steam Charts | |
 | 1 | 9/29/2022 | 63 | Free | Steam Charts | |
 | 1 | 9/1/2020 | 80 | Free | Steam Charts | |
 | 1 | 8/14/2022 | 65 | Free | Steam Charts | |
 | 1 | 2/15/2021 | 64 | Free | Steam Charts | |
 | 1 | 4/5/2023 | 76 | Free | Steam Charts | |
 | 1 | 8/14/2021 | 63 | Free | Steam Charts | |
 | 1 | 2/14/2024 | 65 | 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, January 12). Steam Store. Steam Store.
- Valve Corporation. (2025, January 12). Underworld Idle on Steam. Steam Store.
- Valve Corporation. (2025, January 6). Cave Crawlers on Steam. Steam Store.
- Valve Corporation. (2025, January 11). Otherworld Legends 战魂铭人 on Steam. Steam Store.
- Valve Corporation. (2025, January 8). Drugs and Crime Idle on Steam. Steam Store.
- Valve Corporation. (2025, January 1). Rainbowcore Hypernova on Steam. Steam Store.
- Valve Corporation. (2025, January 12). Object N on Steam. Steam Store.
- Valve Corporation. (2024, October 8). It's Dark on Steam. Steam Store.
- Valve Corporation. (2024, September 23). XBall on Steam. Steam Store.
- Valve Corporation. (2024, October 29). 魔能纪元 on Steam. Steam Store.
- Valve Corporation. (2024, December 17). Emerald Dreams: Sanity - Platformer Quest on Steam. Steam Store.