UnderDark: Defense

Contains adsIn-app purchases
4.6
63.8K reviews
1M+
Downloads
Content rating
PEGI 7
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About this game

Over 2 million downloads! The strategy game that's captivated tower defense fans around the globe!

Your mission is to defend the camp from the unidentified enemies lurking in the dark dungeon.
Place towers strategically and choose buffs to grow stronger.
Always stay prepared, because your enemies will only grow stronger!

[UnderDark : Defense] is a tower defense game that delivers strategic fun with simple one-handed controls, anytime, anywhere.
Whether you're new to tower defense or a seasoned fan, you'll never want to let go once you dive in.

Step 1: Place towers and block the monster's path.
Step 2: Choose one of the three buffs and plan out your strategy.
Step 3: Have fun with the new characters, towers, and in-game content updated every two weeks!

Reviews from players around the world ⭐️⭐️⭐️⭐️⭐️:

"The best tower defense game" - dani*****

"This is the first time I've ever left a game review. That's how fun it is!" - dark****

"Love that it actually makes you think, unlike the other defense games" - flow****

"Super fun to play with different maps and builds every time" - Keit****
Updated on
Oct 30, 2025
Available on
Android, Windows*
*Powered by Intel® technology
Events & offers

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Financial info, and Device or other IDs
Data is encrypted in transit

Ratings and reviews

4.6
62.2K reviews
jake robins
September 16, 2024
So I've played this game for about a month now, it's had it's ups and downs. The upside things is that the art, the macabre theme, and the tower designs are all very cool. The grid tower placement and designing our paths around the objects also adds to the uniqueness of the game. The big downside is the difficulty. It started as an easy game for about 20 levels. Then, as it balanced on difficulty for about 10 levels, it then got ridiculously hard after level 30, and can't get further
17 people found this review helpful
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Reece White
August 21, 2024
Great tower defense game. No forced ads, loads of ways to get stuff for free just by actually playing the game. Devs really know what they are doing on this. I suggest you get this game!! My only little change would be to have the ability to actually see your towers attack power with all your boosts and levels. Showing plus certain percentage is not really helpful to the player to work out there actual best towers.
37 people found this review helpful
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LiberalDust
August 23, 2024
Thanks for review! I appreciate it!
James Bailey
October 2, 2025
lol. they changed the scoring for the Boss ranking dungeon, but not the old scores. I have no idea what score I get now. also, future update advice. make next month's monster even bigger, so it is impossible to change to a different setup. as it is, it is quite a challenge to switch to a different set. of course it was never an issue when it was under the monster, but whatever.
9 people found this review helpful
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What’s new

[Underdark: Defense] November 1 Update
- New hero “Succubus” joins the battle
- Fat Shark and Plague Doctor abilities enhanced
- New stage open / Max account level expanded to 300
- Daily Dungeon revamped
- Events: Bingo ends (10/31), Board & Halloween start (11/1)
- Bug fixes: Dungeon crash, abnormal level growth, and more