Underdark vs Geometry Tower
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Underdark
Defend the Eternal Flame from relentless dark forces in this tactical tower defense game. Strategically place towers, choose powerful buffs, and level up unique heroes to forge an impenetrable defense. Enjoy one-handed gameplay for strategic fun anytime, anywhere.
- Defend the Eternal Flame
- One-handed gameplay
- Customize defense strategy
- Level up heroes
- Strategic tower placement
- Choose growth buffs
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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!
Geometry Tower
Engage in strategic tower defense battles with roguelike elements. Upgrade your tower, collect resources, and refine your tactics to withstand endless waves of enemies. Enjoy stylized geometric art and addictive idle gameplay.
- Roguelike gameplay with upgrade choices
- Idle tower defense with resource collection
- Strategic tower upgrades and research
- Endless waves of enemies
- Stylized geometric art design
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Defend your tower with strategy in battles, and enjoy exciting challenges of this Roguelike game! -Roguelike Gameplay Choose from numbers of upgrades to make it an indestructible tower after endless waves of enemies in roguelike battles. Experience the fun of Roguelike! -Idle Tower Defense Addictive tower defense gameplay with idle mechanism. Easy to play, defend against the attacks from enemies with simply clicks. Collect resources from battles to level up the ATK and HP of your tower. In the meantime, develop the researches of your tower to power up. -Defeat With Strategy Upgrade your tower to be stronger with strategy and continue to refine your strategy with each battle. You have to defend the tower from waves of enemies to the last second. Prove your tactical skills in these thrilling challenges and achieve the victory. - Stylized Art Design Elements in the game are designed with simple geometric shapes in a stylized way.
Screenshots
Verdict
Underdark and Geometry Tower both sit at 4.8 stars, but that hides the real split: 72% of Underdark's written reviews are positive against 27% of Geometry Tower's. Underdark also leads on update cadence (every 4 days vs fortnightly). On price, rating, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Underdark sells 10 one-off in-app purchases and Geometry Tower sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.8 for Underdark against 4.7 for Geometry Tower. Both are backed by a comparable volume of ratings — 4.1K and 4.7K respectively. Written reviews are what separate them: 72% of Underdark's written reviews are positive against 27% of Geometry Tower's.
Underdark ships an update every 4 days, Geometry Tower fortnightly. Both last shipped on November 12, 2026.
| Parameter | Underdark | Geometry Tower |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4.1K ratings) — better | 4.7 (4.7K ratings) |
| Positive reviews | 72.1% of reviews — better | 26.5% of reviews |
| Number of ratings | 4.1K | 4.7K — better |
| Update frequency | Every 4 days — better | Fortnightly |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 521 MB | 265 MB |
| Age rating | 4+ | 4+ |
| Developer | SeungHo Chung | CYBERJOY LIMITED |
Customer experience
Underdark
Geometry Tower
User reviews
Underdark
From 4.1K App Store ratingsWhat we love
- 🚀 Addictive gameplay
- 👍 Generous with rewards
- 🚀 Smooth performance
- 👍 No forced ads
- 👍 Unique tower defense mechanics
Room to improve
- 🐛 Multiplayer issues
- 🔋 Battery drain
- 🔒 Paywall for progression
- 🔒 Excessive microtransactions
- 🔒 Confusing UI with too many menus
Geometry Tower
From 4.7K App Store ratingsWhat we love
- 🚀 Simple yet challenging gameplay
- 👍 Attractive visuals
- 🎮 Fun for a while
Room to improve
- 🔍 Difficulty spike after early levels
- 💰 Heavily monetized with aggressive in-app purchases
- 🔁 Repetitive gameplay
- 🐛 Bugs and crashes
- 🔋 Performance issues on some devices
Bugs and requests
Underdark
Reported bugs
3 issues- Goblin tower factory causing game slowdown
- Consecutive login rewards reset after updates
- Invisible towers in multiplayer
Requested features
5 requests- Ability to rotate towers
- Move towers after placement
- More enemy variety and animations
- Improved co-op mode
- Simplified progression system
Geometry Tower
Reported bugs
3 issues- Ads causing game freezes and crashes
- Inability to rejoin battles after ad interruptions
- Weapon/upgrade selection issues
Requested features
4 requests- Add an endless mode
- Improve weapon/upgrade selection and progression
- Optimize performance and reduce overheating
- Reduce reliance on ads and in-app purchases
In-app purchases
Underdark
- daily_package_01$0.99
- blade_pakcage$2.99
- daily_package_02$2.99
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- exp_2x$3.49
- Event Package 2$3.99
- add_speed$7.49
- season_superpass_1$7.99
- pack_remove_ads$7.99
- pack_remove_ads2$10.99
- season_hyperpass_1$18.99
Geometry Tower
- Golden Piggy 1$2.99
- Pack 1$2.99
- Common Battle Pass$4.99
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- Pack 2$4.99
- Delux Monthly Card$9.99
- Rare Battle Pass$9.99
- Pack 4$9.99
- Pack 5$19.99
- Pack 6$29.99
- Delux Life Time Card$49.99








