UnderDark: Defense

Contains adsIn-app purchases
71.5K reviews
Content rating
Rated for 7+
1M+
Downloads
Content rating
Rated for 7+
Mild Violence
In-Game Purchases (Includes Random Items)
Learn more
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About this game

Protect the last campfire in UnderDark: Defense. Place towers, shape the enemy's path, and hold back waves of monsters. Your choices change the battle.

• Build your own defense with different towers.
• Choose one of three buffs and develop your strategy.
• Combine tower abilities to face powerful bosses.
• Play with one hand and keep the flame alive.

3 million downloads worldwide.
Build your defense, choose your buffs, and protect the last campfire.
Updated on
Sep 12, 2026
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

69.6K reviews
Jason Skumanich
April 12, 2026
Edit from 5 stars to 1. Once the light processing plant is unlocked, you have to watch an ad to play the map. No. no no no no. You are not going to get away with forced ads and expect a good review. I've watched countless ads on my own volition because I enjoy the game, and the reward boosts are a qol feature. When you force advertisements, you essentially admit your intention. Ads are not a core gameplay mechanic of any good game. Final review? 1/5.
36 people found this review helpful
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LiberalDust
May 11, 2026
Hello, this is the Underdark development team. We apologize for the frustration caused by the advertisement system. Your feedback regarding forced ads and gameplay experience will be carefully reviewed as we continue improving the game environment. E-mail: libertydust@gmail.com
Lysias Leviathan
April 27, 2026
3/12: 2* Way too many overpriced micro transactions. There's 2 battle passes for 1 season. Lots of text is incorrect. For example, pet combination says 2 pets but actually takes 4. Prop combination says it takes 2 pets... and there's an energy mechanic. So much wasted potential for the actually enjoyable tower defense part of the game. 4/27: 1* Still no fixes. Also the silkmoth mode is almost unplayable. The load icon for unlocking towers gets bigger each time until it blocks the entire screen.
17 people found this review helpful
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LiberalDust
March 13, 2026
Hello, this is the Underdark Development Team. We’re sorry the microtransactions and incorrect descriptions caused frustration. Issues like incorrect pet/prop combination text will be reviewed and corrected. Thank you for the feedback. E-mail: libertydust@gmail.com
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
24 people found this review helpful
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What’s new

■ Item Awakening — Awaken God grade gear up to 5 stages. Main option up to 5×, unique effects grow too.
■ Friends — Add up to 30 friends and send free Diamonds daily.
■ Friend Roulette Event — Claim gifts for tickets and spin for rewards. Until Sep 30 (KST).
■ PvP Season 3: Boss Counterattack — Send one of three bosses to your opponent every 5 waves.
■ Fixed Co-op Dungeon freezes, bulk purchase pricing, mail claim errors and more.
Content rating
Rated for 7+
Mild Violence
In-Game Purchases (Includes Random Items)
Learn more

App support

Phone number
+821031036858
About the developer
정승호
Libertydust@gmail.com
시흥동 창업로 18 807호 수정구, 성남시, 경기도 13449 South Korea

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