Best Free to Play Tower Defense Games on Steam
Check out this fantastic list of free-to-play tower defense games you can enjoy on Steam right now, updated on April 01st 2026. Looking for even more free titles? Explore the complete list of the best free to play tower defense games on Steam.
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1. 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 is a strategy, idler and tower defense game. Released on November 30th 2025 has received 3,639 reviews of which 3,201 were positive and 438 were negative resulting in a rating of 8.5 out of 10. The game has hit the top spot as the #1 most played tower defense game, thanks to its 888 peak concurrent players over the last day.
8.5
3,201
438
888
players
2. 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 is a level editor, tower defense and building game. Released on May 06th 2021 has received 3,674 reviews of which 3,354 were positive and 320 were negative resulting in a rating of 8.8 out of 10. While seeing 237 players online at once in the last 24 hours, this game is currently ranked #2 among tower defense games based on player count.
8.8
3,354
320
237
players
3. Bloons Adventure Time TD
Defend Ooo from the Bloon invasion in this epic tower defense crossover. Bloons Adventure Time TD is a strategy, action and tower defense game. Released on January 16th 2019 has received 4,302 reviews of which 3,743 were positive and 559 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #3 spot among the most played tower defense games.
8.4
3,743
559
83
players
4. Diplomacy is Not an Option: Shareware
Diplomacy is Not an Option: Shareware is a free prequel to the original game. In a medieval fantasy world, you are to build settlements, raise huge armies, and defend against massive hordes of enemies. Learn how Ironbrow clan shaped the world's map the first time - if you survive, that is. Diplomacy is Not an Option: Shareware is a strategy, city builder and colony sim game. Released on April 30th 2025 has received 574 reviews of which 532 were positive and 42 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #4 spot among the most played tower defense games.
8.6
532
42
52
players
5. Prime World: Defenders 2
Defenders 2, - an exciting hybrid of Tower Defense and CCG, - is now available on Steam! Challenge endless hordes of monsters: build an impassable defense on their path and protect your mines. Collect all the unique towers and prove that even a tornado is not an obstacle for you. Prime World: Defenders 2 is a tower defense, strategy and massively multiplayer game. Released on November 29th 2018 has received 2,132 reviews of which 1,688 were positive and 444 were negative resulting in a rating of 7.6 out of 10. The game currently holds the #5 spot among the most played tower defense games.
7.6
1,688
444
23
players
6. Zombie Defense
A modern hybrid of the classic RTS and modern Tower Defense. Recruit soldiers, place them on slots and let them shoot incoming waves of zombies by their own. Order supplies, throw grenades, order airstrikes and many more... Perfect mix of strategy, tactics and micromanagement. Zombie Defense is a zombies, tower defense and strategy game. Released on September 30th 2016 has received 2,157 reviews of which 1,811 were positive and 346 were negative resulting in a rating of 8.1 out of 10. The game currently holds the #6 spot among the most played tower defense games.
8.1
1,811
346
20
players
7. Crystal Clash
Crystal Clash is a mix of Lane Battles and Deckbuilding - with action-packed tug-of-war strategy, just like your favorite RTS mods from back in the day! :) Play 2v2 or co-op with a friend, or pair up with new allies and enemies! Collect cards, build your decks and have fun crushing your enemies! Crystal Clash is a action rts, tower defense and casual game. Released on January 14th 2022 has received 1,367 reviews of which 1,133 were positive and 234 were negative resulting in a rating of 7.9 out of 10. The game currently holds the #7 spot among the most played tower defense games.
7.9
1,133
234
5
players
8. FROM ASHES, BLOOM
A minimalist rogue-like tower defense where you protect Earth against humanity. FROM ASHES, BLOOM is a nature, action roguelike and tower defense game. Released on March 11th 2024 has received 731 reviews of which 679 were positive and 52 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #8 spot among the most played tower defense games.
8.7
679
52
2
players
9. Eden Rising
Brace yourself for a brand new action-packed Open World. Explore a huge world to gather materials for gear and defenses. Use everything at your disposal to defend your bases and defeat hordes of hostile monsters. Play solo or up to 8-player online! Eden Rising is a adventure, multiplayer and open world game. Released on May 17th 2019 has received 1,449 reviews of which 934 were positive and 515 were negative resulting in a rating of 6.3 out of 10. The game currently holds the #9 spot among the most played tower defense games.
6.3
934
515
2
players
10. Ninja Kiwi Archive
Enjoy some of the best loved Flash games of the past in this awesome time capsule of over 60 Ninja Kiwi classics. Experience a piece of history and play the original Flash games that spawned the worldwide phenomenon of Bloons TD. Ninja Kiwi Archive is a casual, arcade and strategy game. Released on July 08th 2020 has received 5,439 reviews of which 5,107 were positive and 332 were negative resulting in an impressive rating of 9.1 out of 10. The game currently holds the #10 spot among the most played tower defense games.
9.1
5,107
332
More Tower Defense & Related Games
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