Free Tower Defense Games on Steam
Steam currently has 2,779 Tower Defense 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 Tower Defense game rankings were last updated on 7/11/2025.
Looking for more? Explore other lists such as:
- Best tower defense games on Steam
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1. Dota 2
Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has taken on a life of its own.
Dota 2 holds the #1 spot for "best free Tower Defense game on Steam" with a Player Score of 81. Its score was calculated by analyzing a total of 2,517,362 reviews on Steam. This breaks down to a total of 2,050,627 positive reviews and 466,735 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Dota 2 on the Steam Deck (though some functionality may be limited).
2. Ultimate Zombie Defense
Team up or face it alone in this top down zombie slaying defense adventure! Featuring up to 4 player online co-op, cleanse the infected wave by wave and upgrade your base with traps & defenses to build the Ultimate Zombie Defense. Can YOU stop them?
Ultimate Zombie Defense has achieved a Player Score of 83, placing it in the #2 spot for the best free Tower Defense games. Its score was calculated by analyzing a total of 3,200 reviews on Steam. This breaks down to a total of 2,749 positive reviews and 451 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 Ultimate Zombie Defense on the Steam Deck (though some functionality may be limited).
| Steam Price | $4.99 |
| Release Date | 12/8/2020 |
| Developer | Terror Dog Studio |
| Publisher | Terror Dog Studio |
| Steam App Id | 1035510 |
3. Idle Hero TD - Tower Defense
Endless idle tower defense game full of deep strategy and combat mechanics. Unlock and upgrade dozens of epic fantasy heroes to defeat an infinite swarm of enemy monsters. Strategize hero positions, synergies, and skills for an effective defense, then sit back and let the auto-battler do its thing!
Idle Hero TD - Tower Defense has achieved a Player Score of 78, placing it in the #3 spot for the best free Tower Defense games. Its score was calculated by analyzing a total of 710 reviews on Steam. This breaks down to a total of 586 positive reviews and 124 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 Idle Hero TD - Tower Defense on the Steam Deck (though some functionality may be limited).
| Release Date | 5/3/2024 |
| Developer | Swell Games LLC |
| Publisher | Swell Games LLC |
| Steam App Id | 2897580 |
4. Incremental Epic Hero 2
A mixture of incremental/idle and roleplaying game set in fantasy world filled with monsters and things to explore, where battling is constant, almost everything can be upgraded, and with wide array of various prestige mechanics to always keep things interesting and moving forward!
Incremental Epic Hero 2 has achieved a Player Score of 68, placing it in the #4 spot for the best free Tower Defense games. Its score was calculated by analyzing a total of 1,435 reviews on Steam. This breaks down to a total of 1,014 positive reviews and 421 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Incremental Epic Hero 2 on the Steam Deck (though some functionality may be limited).
| Release Date | 1/2/2025 |
| Developer | Hapiwaku |
| Publisher | Idle System, Inc. |
| Steam App Id | 1690710 |
5. CounterSide
Everything has another side Urban Graphic Novel RPG "CounterSide" A world where conflict never ends between Counters and Corrupted Objects after the Administration Failure We invite you to a journey to save the Reality.
CounterSide has achieved a Player Score of 73, placing it in the #5 spot for the best free Tower Defense games. Its score was calculated by analyzing a total of 3,675 reviews on Steam. This breaks down to a total of 2,752 positive reviews and 923 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 CounterSide on the Steam Deck (though some functionality may be limited).
| Release Date | 9/1/2022 |
| Developer | Studiobside Co.,Ltd |
| Publisher | Studiobside Co.,Ltd |
| Steam App Id | 1976440 |
6. Dungeon Defenders II
Dungeon Defenders II is a cooperative Action Tower Defense game packed with roleplaying elements like loot, leveling, and pets.
Dungeon Defenders II has achieved a Player Score of 76, placing it in the #6 spot for the best free Tower Defense games. Its score was calculated by analyzing a total of 21,824 reviews on Steam. This breaks down to a total of 16,870 positive reviews and 4,954 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Dungeon Defenders II on the Steam Deck.
| Release Date | 6/20/2017 |
| Franchise | Chromatic Games |
| Developer | Chromatic Games |
| Publisher | Chromatic Games |
| Steam App Id | 236110 |
7. The Perfect Tower II
The Perfect Tower II is a mix between an incremental and a tower defense game. Build a town, manage resources and explore a variety of mini-games and tons of upgrades. Fully automate your game and watch numbers going up!
The Perfect Tower II has achieved a Player Score of 85, placing it in the #7 spot for the best free Tower Defense games. Its score was calculated by analyzing a total of 3,689 reviews on Steam. This breaks down to a total of 3,239 positive reviews and 450 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 The Perfect Tower II on the Steam Deck (though some functionality may be limited).
| Release Date | 2/26/2021 |
| Franchise | Fire Sword Studios |
| Developer | Fire Sword Studios |
| Publisher | Fire Sword Studios |
| Steam App Id | 1197260 |
8. Bloons TD Battles 2
From the creators of Bloons TD6... Bloons TD Battles 2 is a brand new installment of the top-rated head-to-head tower defense game. Gather your Hero, choose your team of powerful Monkey Towers, and prepare to battle one on one against other players and relentless waves of Bloons!
Bloons TD Battles 2 has achieved a Player Score of 83, placing it in the #8 spot for the best free Tower Defense games. Its score was calculated by analyzing a total of 32,493 reviews on Steam. This breaks down to a total of 27,351 positive reviews and 5,142 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 Bloons TD Battles 2 on the Steam Deck (though some functionality may be limited).
| Release Date | 11/30/2021 |
| Franchise | Ninja Kiwi Games |
| Developer | Ninja Kiwi |
| Publisher | Ninja Kiwi |
| Steam App Id | 1276390 |
9. Minion Masters
An addictive fast-paced hybrid of Card games & Tower-Defense. Play 1v1 - or bring a friend for 2v2 - and engage in epic online multiplayer battles full of innovative strategy and awesome plays! Collect 200+ cards with unique mechanics, all free!
Minion Masters has achieved a Player Score of 88, placing it in the #9 spot for the best free Tower Defense games. Its score was calculated by analyzing a total of 64,910 reviews on Steam. This breaks down to a total of 58,104 positive reviews and 6,806 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 not possible to play or run Minion Masters on the Steam Deck.
10. Infinitode 2 - Infinite Tower Defense
Infinitode 2 - a strategy in the Tower Defense genre, in which the player will have to build towers to protect his base from endless waves of enemies. The game features huge maps, lots of towers, resource miners, upgrade tree and map editor.
Infinitode 2 - Infinite Tower Defense has achieved a Player Score of 88, placing it in the #10 spot for the best free Tower Defense games. Its score was calculated by analyzing a total of 3,722 reviews on Steam. This breaks down to a total of 3,401 positive reviews and 321 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on both Windows and Linux systems. At the moment, it is possible to play Infinitode 2 - Infinite Tower Defense on the Steam Deck (though some functionality may be limited).
More Free Tower Defense Games
Explore even more rankings for the 100 best free Tower Defense games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 555,429 | 7/9/2013 | 81 | Free | Steam Charts | |
| 4,789 | 12/8/2020 | 83 | $4.99 | Steam Charts | |
| 1,214 | 5/3/2024 | 78 | Free | Steam Charts | |
| 729 | 1/2/2025 | 68 | Free | Steam Charts | |
| 669 | 9/1/2022 | 73 | Free | Steam Charts | |
| 396 | 6/20/2017 | 76 | Free | Steam Charts | |
| 382 | 2/26/2021 | 85 | Free | Steam Charts | |
| 373 | 11/30/2021 | 83 | Free | Steam Charts | |
| 330 | 5/24/2019 | 88 | Free | Steam Charts | |
| 265 | 5/6/2021 | 88 | Free | Steam Charts | |
 | 233 | 4/10/2020 | 88 | Free | Steam Charts | |
 | 204 | 12/19/2017 | 62 | Free | Steam Charts | |
 | 188 | 4/20/2016 | 89 | Free | Steam Charts | |
 | 183 | 7/23/2015 | 85 | Free | Steam Charts | |
 | 149 | 5/23/2023 | 71 | Free | Steam Charts | |
 | 106 | 2/17/2024 | 68 | Free | Steam Charts | |
 | 84 | 7/8/2020 | 91 | Free | Steam Charts | |
 | 81 | 8/4/2024 | 81 | Free | Steam Charts | |
 | 79 | 1/16/2019 | 84 | Free | Steam Charts | |
 | 78 | 9/22/2021 | 50 | 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 11). Steam Store. Steam Store.
- Valve Corporation. (2025, July 11). Dota 2 on Steam. Steam Store.
- Valve Corporation. (2025, July 12). Ultimate Zombie Defense on Steam. Steam Store.
- Valve Corporation. (2025, July 7). Idle Hero TD - Tower Defense on Steam. Steam Store.
- Valve Corporation. (2025, June 10). Incremental Epic Hero 2 on Steam. Steam Store.
- Valve Corporation. (2025, July 2). CounterSide on Steam. Steam Store.
- Valve Corporation. (2025, July 7). Dungeon Defenders II on Steam. Steam Store.
- Valve Corporation. (2025, July 10). The Perfect Tower II on Steam. Steam Store.
- Valve Corporation. (2025, July 8). Bloons TD Battles 2 on Steam. Steam Store.
- Valve Corporation. (2025, July 12). Minion Masters on Steam. Steam Store.
- Valve Corporation. (2025, July 5). Infinitode 2 - Infinite Tower Defense on Steam. Steam Store.