Comparison

Underdark vs Spin Squad!

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 buffs, and level up your 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 and choose buffs
  • Hero abilities and enhancements
  • Earn trophies
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

Spin Squad!

This casual strategy game combines luck and strategic decision-making. Spin to acquire powerful guardians, merge them to create mythic beings, and battle fierce bosses. Your team composition and guardian abilities are key to victory.

Highlights
  • Spin for legendary guardians
  • Merge guardians to create mythic ones
  • Engage in epic boss battles
  • Strategic team building
  • Utilize guardian roles and traits
  • Luck-based gameplay elements
Features
Read full description

※Today's Fortune Teller※ Your belief in Luck will make you stronger. Keep in mind that your strategy is more important than anything else. Remember, Bosses can bring significant consequences, whether good or bad. [Turn Your Luck Into Fortune] Congratulations! You’ve obtained a Legendary Guardian! Which powerful guardian will you get in your next spin? [Mythic Tales] Merge your Guardians to create a Mythic Guardian! Experience their overwhelming power! [Epic Boss Battle] Break your limit! Engage in fierce battles with the powerful Bosses! [Play Strategically] Strategy for Victory! Merge Guardians and build your own team! [Various Roles and Traits] Each Guardian has special abilities! Utilize their roles and traits to unleash explosive synergy! Do you trust your own luck? Let's Strike! Looking for a Casual Strategy Game? Let's Strike!! Your luck and choices are the secrets to victory! Prove your skills now in Spin Squad!

Screenshots

Underdark4 screens
Spin Squad!4 screens

Verdict

The call

The clearest difference is review sentiment: Underdark at 72% against Spin Squad!'s 47%. Underdark also leads on rating (4.8 vs 4.6) and ratings volume (4K vs 1K). On price, update cadence, ads and in-app purchases 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 Spin Squad! sells 40 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Underdark holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 4K and 1K respectively. Written reviews point the same way: 72% of Underdark's written reviews are positive against 47% of Spin Squad!'s.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

Scorecard4 real differences · 6 level
Underdark versus Spin Squad!: the parameters behind the verdict, then further details
ParameterUnderdarkSpin Squad!
PriceFreeFree
Rating4.8 (4K ratings) — better4.6 (1K ratings)
Positive reviews72.4% of reviews — better46.6% of reviews
Number of ratings4K — better1K
Update frequencyEvery 4 daysEvery 4 days
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size490 MB1001 MB
Age rating4+4+
DeveloperSeungHo Chung111%

Customer experience

Underdark

All ratings4,047 ratings
Positive95.1%
Neutral2.2%
Negative2.8%
Written reviews826 reviews
Positive72.4%
Neutral8.8%
Negative18.8%

Spin Squad!

All ratings1,023 ratings
Positive90.1%
Neutral3.3%
Negative6.5%
Written reviews479 reviews
Positive46.6%
Neutral15.9%
Negative37.6%

User reviews

Underdark

From 4K App Store ratings

What 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

Spin Squad!

From 1K App Store ratings

What we love

  • 🎮 Fun gameplay
  • 👍 Good concept
  • 🎉 Addictive and enjoyable

Room to improve

  • 🐛 Buggy and glitchy
  • 🤑 Pay-to-win mechanics
  • 🤔 Luck-based progression
  • 💰 Microtransactions and paywall

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

Spin Squad!

Reported bugs

3 issues
  • Frequent crashes
  • Progression issues (getting stuck at certain waves)
  • Inconsistent/unreliable gameplay mechanics

Requested features

5 requests
  • More characters and content
  • Improved luck/summon mechanics
  • Resume feature for interrupted runs
  • PvP or PvE modes
  • Russian language support

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
40 purchases

Spin Squad!

One-time40
  • AdFree & Speed - 1$0.99
  • Golden Bundle Pack$1.99
  • Level 3 Package$1.99
Show 37 more
  • Lucky Spin Package 1$1.99
  • Diamond Subscribe 30 Days$3.99
  • Black Friday Gold Package$4.99
  • Black Friday Invitation Package$4.99
  • Mythic Random Units$4.99
  • Relic Key Subscribe 30 Days$4.99
  • Newbie Package 1$4.99
  • Arin Marble Package 1$5.49
  • Lucky Spin Package 2$5.99
  • Strike Pack 1$6.99
  • Newbie Package 2$6.99
  • Golden Package$7.99
  • Battle Pass$7.99
  • Bamba Muscle Gain Package 2$8.99
  • Lucky Spin Package 3$8.99
  • Black Friday Uni Break Package$9.99
  • Black Friday Relic Key Package$9.99
  • All-in-one Package$9.99
  • Level 6 Package$9.99
  • Newbie All-in-one$9.99
  • Newbie Package 3$12.99
  • Unit Entry Package$14.99
  • Spinner Release Package$14.99
  • Blob Release Package$14.99
  • Kitty Mage Release Package$14.99
  • Good Gun Release Package$14.99
  • Wave Pass_Normal$14.99
  • AdFree & Speed - 2$14.99
  • Battle Premium Pass$17.99
  • Arin Marble Package 3$17.99
  • Mythic Level Pass 1$17.99
  • Wave Pass_Hard$17.99
  • Chapter 3 Wave Pass$19.99
  • Blobopoly Adventure Pack$23.99
  • Growth Package$23.99
  • Lucky Boost Package$23.99
  • Level 12 Package$29.99

Questions

Is Underdark free?
Underdark is free to download, with in-app purchases available.
Is Spin Squad! free?
Spin Squad! is free to download, with in-app purchases available.
Which has better reviews, Underdark or Spin Squad!?
Underdark is rated higher. Underdark averages 4.8 out of 5 from 4K ratings, while Spin Squad! averages 4.6 from 1K ratings.
Do Underdark or Spin Squad! have ads?
Both Underdark and Spin Squad! show ads.
Which is updated more often, Underdark or Spin Squad!?
Underdark ships an update every 4 days, and Spin Squad! every 4 days. Most recently, Underdark was updated on September 24, 2026 and Spin Squad! on September 25, 2026.

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