Underdark:Defense: iPhone vs Android
Underdark:Defense by SeungHo Chung is on both the App Store and Google Play. Here are both versions together: downloads, users, revenue, ratings and chart positions, store by store with totals.
Rating
4.7 ★
77k ratings, both stores
Measured
Best rank now
#123
iPhone · 
Games › Strategy Free
Games › Strategy FreeMeasured
App Store
App details
App ID
6482025287
Publisher
SeungHo Chung
Minimum OS
iOS 13.0+
Content rating
4+
Languages
5
EN JA KO ZH ZH
Size
514 MB
Google Play
App details
App ID
com.FreeDust.UnderDark
Publisher
LiberalDust
Content rating
Everyone
Underdark:Defense downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| iPhone | – | 1M+ |
| Google Play | – | 1M+ Measured |
| Total | – | 1M+ Confidence |
How this is calculated
iPhone: chart positions and rating growth per country, anchored on its own Android downloads; lifetime from ratings worldwide × installs per rating. Google Play: the daily change in its exact install count. The total adds every store.
Where Underdark:Defense's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
In-app revenue
Worldwide, what users spend before Apple and Google take their fee.
| Store | Per day | Per month | Share |
|---|---|---|---|
| App Store | |||
| Google Play | |||
| Total | Confidence | 100% |
Business model: In-app purchase-led
How Underdark:Defense makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds
One-off purchases
/mo
of revenue
Ads
/mo
of revenue
Where it ranks now
Both stores, across every country we track.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.8 ★ | 5.6k |
| Google Play | 4.7 ★ | 71k 1.1k written reviews |
| Both stores | 4.7 ★ weighted by ratings | 77k |
About Underdark:Defense
Defend the Flame from the dark! Level up, strategically place towers, and choose buffs to grow stronger. Keep the light alive!
Defend the Eternal Flame: Experience the thrill of defending the flame from hordes of dark forces that besiege it! Feel the exhilaration as you clear stages, with each victory more satisfying than the last.
One-Handed Gameplay: Enjoy easy-to-master controls, designed for one-handed play. Perfect for strategic fun anytime, anywhere.
Customize Your Defense Strategy: Select buffs and strategically place towers to forge your path of resistance. As you level up and choose your growth buffs, your defense becomes an impenetrable fortress.
Heroic Stand: Choose your guardians to stand against the night. Each hero brings unique abilities to the battlefield. Earn trophies, level up, and enhance your heroes to ensure the flame flickers on through the darkest nights!
Defend the Eternal Flame: Experience the thrill of defending the flame from hordes of dark forces that besiege it! Feel the exhilaration as you clear stages, with each victory more satisfying than the last.
One-Handed Gameplay: Enjoy easy-to-master controls, designed for one-handed play. Perfect for strategic fun anytime, anywhere.
Customize Your Defense Strategy: Select buffs and strategically place towers to forge your path of resistance. As you level up and choose your growth buffs, your defense becomes an impenetrable fortress.
Heroic Stand: Choose your guardians to stand against the night. Each hero brings unique abilities to the battlefield. Earn trophies, level up, and enhance your heroes to ensure the flame flickers on through the darkest nights!
Underdark:Defense iPhone
언더다크 : 디펜스
Underdark:Defense is #193 in Games › Strategy Free in Japan and charting in 2 of 24 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
DeveloperSeungHo Chung
CategoryGames
PriceFree
Released
Rating★ 4.8 (5.6k)
Version3.4.0
Age rating4+
First seen by us 25 Sep 2026
25 Sep 2026Installs (est.)1M+ worldwide
Rating
4.8 ★
5.6k ratings
Measured
Best rank now
#193
Games › Strategy FreeMeasured
Underdark:Defense on the App Store
App details
App ID
6482025287
Publisher
SeungHo Chung
Minimum OS
iOS 13.0+
Content rating
4+
Languages
5
EN JA KO ZH ZH
Size
514 MB
Underdark:Defense downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where Underdark:Defense's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
In-app revenue
Worldwide, what users spend in Underdark:Defense before Apple and Google take their fee.
How this is calculated
Not in an overall Top Grossing chart, only in category charts: each category position is converted to the overall position it corresponds to, then priced on the same rank-to-revenue curve, inside the part of each market the charted apps leave over.
Business model: In-app purchase-led
How Underdark:Defense makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds
One-off purchases
/mo
of revenue
Ads
/mo
of revenue
Where it ranks now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | Games › StrategyFree | #193 |
| South Korea | Games › StrategyFree | #123 |
Apps near Underdark:Defense on the chart
Games › Strategy Free, around #193.
Ratings
App Store, worldwide.
Rating
4.8 ★
5.6k ratings
Measured
Ratings
5.6k
Measured
About Underdark:Defense
Defend the Flame from the dark! Level up, strategically place towers, and choose buffs to grow stronger. Keep the light alive!
Defend the Eternal Flame: Experience the thrill of defending the flame from hordes of dark forces that besiege it! Feel the exhilaration as you clear stages, with each victory more satisfying than the last.
One-Handed Gameplay: Enjoy easy-to-master controls, designed for one-handed play. Perfect for strategic fun anytime, anywhere.
Customize Your Defense Strategy: Select buffs and strategically place towers to forge your path of resistance. As you level up and choose your growth buffs, your defense becomes an impenetrable fortress.
Heroic Stand: Choose your guardians to stand against the night. Each hero brings unique abilities to the battlefield. Earn trophies, level up, and enhance your heroes to ensure the flame flickers on through the darkest nights!
Defend the Eternal Flame: Experience the thrill of defending the flame from hordes of dark forces that besiege it! Feel the exhilaration as you clear stages, with each victory more satisfying than the last.
One-Handed Gameplay: Enjoy easy-to-master controls, designed for one-handed play. Perfect for strategic fun anytime, anywhere.
Customize Your Defense Strategy: Select buffs and strategically place towers to forge your path of resistance. As you level up and choose your growth buffs, your defense becomes an impenetrable fortress.
Heroic Stand: Choose your guardians to stand against the night. Each hero brings unique abilities to the battlefield. Earn trophies, level up, and enhance your heroes to ensure the flame flickers on through the darkest nights!
Latest updates
3.4.0
App Storeのスクリーンショットを更新しました。ゲーム内容は前のバージョンから変更ありません。
3.3.11
■ New: Item Awakening
Awaken God grade equipment up to Awakening 5.
· Use items of the same type from Storage as materials — 1, 2, 4, 8 and 16 per stage (31 in total).
· Awakening always succeeds, and your item level and bonus options are kept.
· The main option grows up to 5× its original value, and each item's unique effect grows stronger at every stage.
· An awakened item can only be replaced by one of the same type and grade, and keeps its awakening level.
■ New: Friends
· Add up to 30 friends by exact nickname search or from the suggested list.
· Send free Diamonds to friends once a day each — the recipient gets 1 to 30 Diamonds.
· Gifts can only be claimed on the day they arrive (KST).
■ Friend Roulette Event
· Earn 1 roulette ticket every time you claim a diamond gift from a friend.
· Spin for Gold, Keys, Diamonds, Embers and more. Spin 10 is supported.
· Milestone rewards from 30 up to 300 total spins, including a Legendary Hero, Legendary Tower, God grade item, random Skin and a Unique Mount.
· Runs until September 30 (KST).
■ PvP Season 3 — Boss Counterattack
Every 5 waves, send one of three bosses to your opponent's side. The chance is shared and does not stack.
· Shapeshifter — changes the type of all towers
· Destroyer Lord — destroys 4 random towers
· Herald of Frenzy — while alive, all monsters move 25% faster
New season score rewards and a new season shop are open, and rankings and purchase limits have been reset.
■ Improvements and Bug Fixes
· If Co-op Dungeon stops progressing, you are now notified and returned to the lobby.
· Chain towers now also link with teammates' towers in Co-op Dungeon.
· Co-op room codes now accept codes containing letters and numbers.
· Fixed incorrect pricing when buying item boxes in bulk.
· Fixed rewards being lost when an error occurred while claiming all mail.
· The Medusa map curse now triggers every 2 waves instead of every wave.
· Fixed damage numbers not being shown at low FPS.
More from SeungHo Chung
UnderDark: Defense Android
UnderDark: Defense is #134 in Games › Strategy Grossing on Google Play in South Korea and charting in 1 of 15 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
DeveloperLiberalDust
CategoryGames › Strategy
PriceFree
Released
Installs1M+
Rating★ 4.7 (71k)
Updated
Content ratingEveryone
Rating
4.7 ★
71k ratings
Measured
Best rank now
#134
Games › Strategy GrossingMeasured
UnderDark: Defense on Google Play
App details
App ID
com.FreeDust.UnderDark
Publisher
LiberalDust
Content rating
Everyone
UnderDark: Defense downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Where UnderDark: Defense's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
In-app revenue
Worldwide, what users spend in UnderDark: Defense before Apple and Google take their fee.
How this is calculated
Not in an overall Top Grossing chart, only in category charts: each category position is converted to the overall position it corresponds to, then priced on the same rank-to-revenue curve, inside the part of each market the charted apps leave over.
Business model: In-app purchase-led
How UnderDark: Defense makes money: subscriptions, one-off purchases and ads.
In-app purchasesAds
One-off purchases
/mo
of revenue
Ads
/mo
of revenue
Where it ranks on Google Play
Every top 200 chart it appears in across 15 countries.
| Country | Charts | Rank |
|---|---|---|
| South Korea | Games › StrategyGrossing | #134 |
| South Korea | Games › StrategyFree | #142 |
Apps near UnderDark: Defense on the chart
Games › Strategy Grossing, around #134.
Ratings
Google Play, worldwide.
Rating
4.7 ★
71k ratings
Measured
Ratings
71k
Measured
Written reviews
1.1k
Measured
About UnderDark: Defense
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 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.
What's new in 3.3.11
■ 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.
■ 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.