Underdark:Defense

SeungHo Chung · iOS

Underdark:Defense

Explore the ad evidence, study the storefront, and build your next acquisition hypothesis.

Paid-ad activity not yet verified
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01 / Creative research

Turn the unknowns into a research plan.

01

Check the acquisition promise

Read the store headline, screenshots and description. What problem is the app promising to solve?

Study the storefront
02

Look for ad evidence

Explore apps with direct store-link matches. Compare their hooks and formats without assuming the same approach works here.

Browse observed advertisers
03

Separate demand from paid growth

Store rankings and revenue estimates describe market context. They do not establish ad spend, conversions or ROAS.

Review the market context

02 / Storefront & product

Where the click lands.

Study the product story and store experience behind the acquisition funnel.

Screenshots

Underdark:Defense screenshot 1Underdark:Defense screenshot 2Underdark:Defense screenshot 3Underdark:Defense screenshot 4Underdark:Defense screenshot 5Underdark:Defense screenshot 6Underdark:Defense screenshot 7Underdark:Defense screenshot 8

03 / Market context

The business behind the app.

Keep revenue, downloads and store rankings separate from advertising performance.

How Much Does Underdark:Defense Make?

Monthly Revenue
$80.0K
Annualized estimate
$960.0K
Per Download
$4.00

Platform Performance

🍎iOS
Revenue
$80.0K
Downloads
20.0K
Rating
4.8 (3,606)

Rating Distribution

4.8
★★★★★
3,606 reviews
5
2%
4
1%
3
2%
2
9%
1
86%

Top Countries

🇺🇸 US🇹🇼 TW🇰🇷 KR
Reviews (3)
★★★★★Leaf Locrian11/16/2025
Just what I've been looking for!

I've been bouncing between mobile games for a while trying to find something I could dump some time into. This game has finally hit all of the bases that I want in a game. It has gradual progression so you can gear up to beat tougher levels. It has tower defense so there's a decent amount of strategy into routing enemies cleverly. It doesn't force ads, only offering them for rewards which I appreciate. There's also a cute art style and it's INCREDIBLY gentle on my phone battery. It's easy to pick up when you just have a couple minutes to kill between tasks, like waiting to be called for an appointment or a short car ride (obviously as a passenger). Progress saves when closing the game so you can hop back in to where you left off. Best mobile time killer since Balatro for me!

★★★★red-wolf009/2/2025
Time Is Everything

this is my second account ive had to create to play this game, im not bothered by having to create a new account but what does bother me is i forgot the reason i uninstalled in the first place. now i remember why thanks to my second play through. the random crashes! nothing worse than spending 10-15+mins in a game and then all of a sudden it crashes and when you go to start back up, there is no continue game. to me this is what kills the fun for me. no rewards or anything to show for it just treated as the player gave up. the game is fun, the challenges are plenty and the difficulty ramps up slowly but not to a point where its boring. the game is a fun game but because of the random crashes and no way to continue the match when that happens, i cannot see myself playing this game anymore until there is a form of support for the player back end. to me time is the most important element. even if the it wasnt a crash, it would be nice to be able to pick back up later and continue playing. especially considering a internet connection is required to play.

★★★★★JeffSchwarz11/27/2024
Great game, reasonable progression

Short version: great game, great progression speed, very fun, good design, not a cash grab. I love it and praise the developer. Long version: I’m really impressed with this game, it’s fun and the progressing rate is very reasonable. There is the option to watch adds to speed things up a bit, but it doesn’t make it painfully slow if you don’t watch adds and none are forced on you, so it really feels optional and like you’re actually purchasing a benefit, not removing an annoyance. On top of that, it is a permanent add removal, but the “watch an add to get x” options stay and just become free. So I absolutely paid the reasonably priced remove adds forever button. It’s no different than if I had to pay that price to buy the game, except I got to trial for free and there’s extra benefits. I’m impressed, it’s an actual fun game, not a cash grab, and I hope this developer makes more, this is a rare find today and I’m super pleased.

Version History (94)
3.0.72/2/2026
3.0.61/31/2026
3.0.412/31/2025
3.0.312/10/2025
3.0.212/2/2025
3.0.111/30/2025
3.0.010/31/2025
2.9.910/4/2025
2.9.89/30/2025
2.9.79/8/2025
Available In (115 Countries)
🇺🇸 United States🇦🇺 Australia🇨🇦 Canada🇨🇳 China🇫🇷 France🇩🇪 Germany🇬🇧 United Kingdom🇮🇹 Italy🇯🇵 Japan🇰🇷 South Korea🇷🇺 Russia🇩🇿 DZ🇦🇴 AO🇦🇷 Argentina🇦🇹 Austria🇦🇿 AZ🇧🇭 BH🇧🇧 BB🇧🇾 BY🇧🇪 Belgium🇧🇲 BM🇧🇷 Brazil🇧🇬 Bulgaria🇨🇱 Chile🇨🇴 Colombia🇨🇷 CR🇭🇷 Croatia🇨🇾 CY🇨🇿 Czech Republic🇩🇰 Denmark🇩🇴 DO🇪🇨 EC🇪🇬 Egypt🇸🇻 SV🇫🇮 Finland🇬🇭 GH🇬🇷 Greece🇬🇹 GT🇭🇰 Hong Kong🇭🇺 Hungary🇮🇳 India🇮🇩 Indonesia🇮🇪 Ireland🇮🇱 Israel🇰🇿 KZ🇰🇪 Kenya🇰🇼 KW🇱🇧 LB🇱🇹 Lithuania🇱🇺 LU🇲🇴 MO🇲🇬 MG🇲🇾 Malaysia🇲🇹 MT🇲🇽 Mexico🇳🇱 Netherlands🇳🇿 New Zealand🇳🇬 Nigeria🇳🇴 Norway🇴🇲 OM🇵🇰 Pakistan🇵🇦 PA🇵🇪 Peru🇵🇭 Philippines🇵🇱 Poland🇵🇹 Portugal🇶🇦 QA🇷🇴 Romania🇸🇦 Saudi Arabia🇷🇸 RS🇸🇬 Singapore🇸🇰 Slovakia🇸🇮 Slovenia🇿🇦 South Africa🇪🇸 Spain🇱🇰 LK🇸🇪 Sweden🇨🇭 Switzerland🇹🇼 Taiwan🇹🇭 Thailand🇹🇳 TN🇹🇷 Turkey🇺🇦 Ukraine🇦🇪 UAE🇺🇾 UY🇺🇿 UZ🇻🇪 VE🇻🇳 Vietnam🇧🇴 BO🇰🇭 KH🇪🇪 Estonia🇱🇻 Latvia🇳🇮 NI🇵🇾 PY🇦🇫 AF🇬🇪 GE🇮🇶 IQ🇱🇾 LY🇲🇦 MA🇲🇿 MZ🇲🇲 MM🇾🇪 YE🇧🇯 BJ🇧🇫 BF🇨🇲 CM🇨🇬 CG🇨🇮 CI🇯🇴 JO🇱🇦 LA🇲🇱 ML🇸🇳 SN🇹🇿 TZ🇺🇬 UG🇿🇲 ZM🇿🇼 ZW
Supported Languages (4)
EnglishJapaneseKoreanChinese
App Details

Defend the Flame from the dark! Level up, strategically place towers, and choose buffs to grow stronger. Keep the light alive! Defend the Eternal Fla...

iOS App ID
6482025287
Content Rating
9+
Min OS
12.0
Size
460.5 MB
In-App Purchases
Yes
Publisher
SeungHo Chung
So

In-App Purchases (10)

NamePriceType
blade_pakcage$2.99One-time
daily_package_02$2.99One-time
exp_2x$3.49One-time
Event Package 2$3.99One-time
add_speed$7.49One-time
season_superpass_1$7.99One-time
pack_remove_ads$7.99One-time
newhero_1_1$9.99One-time
pack_remove_ads2$10.99One-time
season_hyperpass_1$18.99One-time