UnderDark: Defense - 1st Anniv

Contains adsIn-app purchases
4.5
57.5K reviews
1M+
Downloads
Content rating
Everyone
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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
Jul 1, 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

4.5
56.1K reviews
M A
May 12, 2025
This is a great game, but multiplayer doesn't work no matter what my friend and I try, and playing with friends is the only reason he dled it. Had to knock off a star for that. Other than that disappointment, the game is fun and I love how many different towers, heros, and weapons there are to choose from to make the gameplay not just dumb luck. I wish I didn't have to go through so many menus after every level to collect all the perks. That's pretty annoying.
10 people found this review helpful
Did you find this helpful?
LiberalDust
May 21, 2025
Thanks for your thoughtful feedback! We're glad you're enjoying the strategic variety. Sorry about the multiplayer issues—we're working on improving its stability. We'll also look into simplifying the post-level menus for a smoother experience.
Joshua Canfield
May 27, 2025
5⭐️ game! It is very complicated at least for me figuring everything out, and there is a lot. But it is still a great game. I get no forced ads and there are many options for the games. Theres just normal, then ranked, multiplayer and events. I found this game challenging for sure, but I like that it is(or I am just bad at it lol). Large variety with weapons, skins, and things that power you up like clothes, rings, etc. I definitely suggest downloading this game! Monsters look kinda goofy lol :p
15 people found this review helpful
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LiberalDust
June 5, 2025
Thank you so much for the awesome review! We're glad you're enjoying the variety and challenge—even if it feels a bit complex at first. No forced ads, lots of game modes, and goofy monsters are all part of the fun! We'll keep working to make things smoother and even more enjoyable.
Saint “Fu”
May 22, 2025
update down to 2* from 3. unplayable at higher levels. less than 1 frame per second. additionally, some things don't work as text suggests. for example, Living Tower hero at level 3 gets "one of each equipped tower at start of game" and this has never happened (and is why I focused on getting this hero, so a big let down). please fix things because the game was fun when I could play.
7 people found this review helpful
Did you find this helpful?
LiberalDust
May 19, 2025
Thank you for the thoughtful feedback. We're happy you enjoy the core tower defense experience. We're aware of performance issues at higher levels and are working to optimize gameplay even on high-end devices. Your input is invaluable.

What’s new

[Update – July 1]
New Hero: Mermaid
New Tower: Unpredictable Cat
Events: Board ends / Bingo starts (July 1, KST)
Fixes: Mushroom Tower not attacking & ""Try again later"" pop-up
Other: Blue area near hero, Blue Conch timer, iOS package issue
Optimization: High-performance mode improved