Comparison

Underdark vs Mirror Realms

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Defend the Eternal Flame
  • One-handed gameplay
  • Customize defense strategy
  • Level up heroes
  • Strategic tower placement
  • Choose buffs
Features
Read full description

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!

About

Mirror Realms

Control two mirrored orbs simultaneously in a minimalist arcade game. Master inverted gravity and synchronized controls across two distinct realms. Push your reflexes, timing, and focus to the limit with dynamic challenges and stunning visuals.

Highlights
  • Dual-control gameplay
  • Inverted gravity mechanics
  • Dynamic challenges and power-ups
  • Stunning space aesthetic
  • Global leaderboards
  • Haptic feedback
Features
Read full description

Two worlds. Two orbs. One tap. Infinite challenge. Welcome to Mirror Realms, a minimalist reflex arcade game that will push your coordination, timing, and focus to the limit. Control two mirrored orbs simultaneously across a split screen — one in the Light Realm, one in the Shadow Realm. With inverted gravity and synchronized controls, every tap affects both worlds. Can your reflexes keep up when the universes move in opposite directions? UNIQUE DUAL-CONTROL GAMEPLAY • Tap once to make both orbs jump or drop simultaneously • Master the art of controlling two characters at once • Light Realm follows normal gravity — Shadow Realm is inverted • Easy to learn, impossible to master one-tap controls STUNNING SPACE AESTHETIC • Dynamic nebula backgrounds that evolve as you progress • Hand-drawn meteors and comets float through alien skies • Four distinct color stages unlock with higher scores • Hypnotic cosmic visual effects and ambient music for total immersion DYNAMIC CHALLENGES AND POWER-UPS • Four unique obstacle types keep every run fresh • Smooth progressive difficulty for fair yet fierce competition • Power-ups: Time Freeze, Gravity Flip, Mirror Swap, Energy Burst • Combo multiplier rewards precision and rhythm • Impactful collision effects with haptic feedback COMPETE GLOBALLY • Global leaderboards with anonymous high-score tracking • iCloud sync keeps your progress across all devices • Track personal bests and longest combo streaks • Challenge friends and climb the world rankings SEAMLESS PERFORMANCE • Optimized for iPhone and iPad in both portrait and landscape • 60 FPS gameplay with ultra-responsive controls • Optional one-time purchase to remove ads permanently • Auto save and sync through iCloud ACCESSIBLE DESIGN • Simple, intuitive tap controls anyone can enjoy • Color-blind-friendly visuals and high-contrast UI • Perfect for short sessions or extended play marathons Mirror Realms fuses the simplicity of classic arcade reflex games with a mind-bending dual-control twist. Addictive, beautiful, and endlessly replayable — each run dares you to beat your focus, your timing, and yourself. Can you master both realms at once?

Screenshots

Underdark4 screens
Mirror Realms4 screens

Verdict

The call

The clearest difference is ratings volume: Underdark at 4.1K against Mirror Realms's 1. Mirror Realms's advantage is update cadence (daily vs every 4 days) and rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Underdark sells 34 one-off in-app purchases and Mirror Realms sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Mirror Realms holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Underdark has 4.1K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Underdark ships an update every 4 days, Mirror Realms daily. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Underdark versus Mirror Realms: the parameters behind the verdict, then further details
ParameterUnderdarkMirror Realms
PriceFreeFree
Rating4.8 (4.1K ratings)5.0 (1 ratings) — better
Positive reviews72.0% of reviews—
Number of ratings4.1K — better1
Update frequencyEvery 4 daysDaily — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better14.0
Further details — not scored
Size520 MB43 MB
Age rating4+4+
DeveloperSeungHo ChungMichael Cozzolino

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

Mirror Realms

Not enough reviews yet to summarise bugs or requests.

In-app purchases

34 purchases

Underdark

One-time34
  • Event Package 1$0.99
  • daily_package_01$0.99
  • season_growth_1$0.99
Show 31 more
  • dailyshop_1$1.99
  • blade_pakcage$2.99
  • daily_package_02$2.99
  • exp_2x$3.49
  • skin_30501$3.49
  • Event Package 2$3.99
  • pet_package$4.99
  • weekly_package_01$6.99
  • add_speed$7.49
  • pass_hero_115$7.49
  • pass_hero_102$7.49
  • pass_hero_110$7.49
  • season_superpass_1$7.99
  • pack_remove_ads$7.99
  • daily_package_03$7.99
  • hero_legend_santa$8.99
  • hero_legend_tower$8.99
  • hero_legend_armor$8.99
  • Event Package 3$8.99
  • hero_legend_joker$8.99
  • hero_legend_necromancer$8.99
  • hero_legend_chicken$8.99
  • tower_legend_614$8.99
  • ud_pack_20106$8.99
  • tower_legend_628$8.99
  • pack_remove_ads2$10.99
  • Event Package 4$12.99
  • season_level_1$16.99
  • season_stage_1$16.99
  • Event Package 5$17.99
  • season_hyperpass_1$18.99
1 purchases

Mirror Realms

One-time1
  • Remove Ads$0.99

Questions

Is Underdark free?
Underdark is free to download, with in-app purchases available.
Is Mirror Realms free?
Mirror Realms is free to download, with in-app purchases available.
Which has better reviews, Underdark or Mirror Realms?
Mirror Realms is rated higher. Underdark averages 4.8 out of 5 from 4.1K ratings, while Mirror Realms averages 5.0 from 1 ratings.
Do Underdark or Mirror Realms have ads?
Both Underdark and Mirror Realms show ads.
Which is updated more often, Underdark or Mirror Realms?
Underdark ships an update every 4 days, and Mirror Realms daily. Most recently, Underdark was updated on November 1, 2026 and Mirror Realms on October 28, 2026.

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