Underdark vs GuardRush
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 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!
GuardRush
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Hold the gate. Survive the waves. Become a legend. GuardRush is a fast, colorful wave-defense action game. Choose your hero, drag to move, and unleash devastating abilities as endless enemy waves march on your gate. THREE HEROES, THREE PLAYSTYLES • Warrior — heavy axe, shield wall, earthshaking ultimate • Archer — rapid multishot, piercing volleys • Mage — meteors, frost novas, and the world-ending Cataclysm FIGHT A LIVING HORDE • 10 enemy types with real behaviors: ranged wraiths, charging hounds, splitting slimes • 6 unique bosses with telegraphed special attacks — learn, dodge, counter • Elite enemies, surprise wave modifiers, and a difficulty curve that keeps you honest GROW STRONGER EVERY RUN • Pick powerful upgrades after every boss • Permanent Mastery tree — damage, health, fire rate, and more • 48 items across 5 rarities up to Legendary — open chests, forge your build • Daily rewards and a growing collection COMPETE • Game Center leaderboard — how deep can you go? • 8 achievements to hunt No ads. No paywalls. Just the gate, the horde, and you.
Screenshots
Verdict
The clearest difference is in-app purchases: GuardRush at none against Underdark's 10. Underdark's advantage is update cadence (every 4 days vs fortnightly) and device support (3 vs 1). On price 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. GuardRush asks for nothing beyond the download.
Underdark ships an update every 4 days, GuardRush fortnightly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Underdark | GuardRush |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4.1K ratings) — better | — |
| Positive reviews | 72.0% of reviews | — |
| Number of ratings | 4.1K — better | — |
| Update frequency | Every 4 days — better | Fortnightly |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 520 MB | 14 MB |
| Age rating | 4+ | 9+ |
| Developer | SeungHo Chung | Ege GUNES |
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
GuardRush
Not enough reviews yet to summarise bugs or requests.
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
GuardRush
No in-app purchases









