Comparison

COSMO PANIC vs Spanky's Zombie Slayer

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

Head to head
About

COSMO PANIC

Pilot an ancient combat machine in this retro space shooter. Battle waves of over 1,000 aliens at once with roguelite elements and unlimited upgrades. Face epic boss battles and enjoy challenging, one-handed gameplay.

Highlights
  • Massive battles against 1,000+ aliens
  • Retro arcade-style graphics
  • One-handed controls
  • Unlimited upgrades and customization
  • Epic boss battles
  • Roguelite elements with changing weapon combinations
  • Challenging retro-style difficulty
Read full description

Extreme Difficulty Shooting Survivor: COSMO PANIC In a distant corner of the galaxy lies a forgotten planet, FUNPARE. A peaceful world filled with smiles and joy, suddenly threatened by an invasion of ruthless aliens! Silent and unstoppable, these unknown enemies bring only destruction, and the FUNPAREANS face despair. But hope is not lost. A nameless FUNPAREAN rises, piloting an ancient combat machine sealed deep within an underground sanctuary. With courage in hand and hope in heart... they fight back against the alien hordes and defend the fate of FUNPARE! Game Features: - Shooting Survivor × Roguelite: Engage in massive battles against over 1,000 alien enemies at once! - Retro arcade-style graphics: Enjoy the nostalgic and thrilling dot-style visuals. - One-handed controls: Easy to pick up and play anywhere, anytime. - Unlimited upgrades and customization: Strengthen your ship and planet to build your ultimate combat force. - Epic boss battles: Face giant alien bosses that test your strategy and reflexes. - Roguelite elements: Tackle each stage with ever-changing weapon combinations for endless replayability. - Challenging retro-style difficulty: Tough, satisfying stages designed for players who love a real challenge—think you can handle it? On this peaceful, untroubled planet, a nameless hero rises— Hop into the cockpit and join the fight to save Funpare from the alien menace!

About

Spanky's Zombie Slayer

Engage in a zombie apocalypse where you don't just survive, you thrive. Unlock and combine unique abilities to become the ultimate slayer, facing hordes of undead with creative and destructive methods. Experience fast-paced, high-energy gameplay with endless ways to defeat enemies.

Highlights
  • Unlockable abilities
  • Fast-paced gameplay
  • Hordes of enemies
  • Creative combat mechanics
  • Zombie slaying action
Read full description

Enter Spanky's Undead Apocalypse! You are not just surviving - but thriving - in the middle of a balls out zombie invasion! And who better to take on the zombie horde than Spanky - a slaysome fellow who ends monsters like swatting flies? Each run, you'll unlock and stack up wild new abilities in your quest to become the ultimate slayer! Will you go full spreadshot madness, double-barrel destruction, or unleash a fleet of lawnmowers to slice through heaps of brain-hungry creeps. Time to improvise, adapt, and discover the most epic ways to wreck the undead. FAST, FUN, AND TOTALLY SLAYIN'! - Quick, high-energy gameplay — jump in anytime for instant action - Loads of unlockable skills — from classic firepower to pure insanity - Hordes of unhinged enemies — and even more unhinged ways to defeat them At the end of the day, you only have to ask yourself: Do you even slay, boy?

Screenshots

COSMO PANIC4 screens
Spanky's Zombie Slayer4 screens

Verdict

The call

The clearest difference is ads: COSMO PANIC at none against Spanky's Zombie Slayer's shown. COSMO PANIC also leads on update cadence (weekly vs every 3 weeks) and iOS requirement (13.0 vs 15.0). Spanky's Zombie Slayer's advantage is rating (4.8 vs 4.4) and ratings volume (834 vs 69). On price, in-app purchases, monetization model and device support 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. COSMO PANIC sells 24 one-off in-app purchases and Spanky's Zombie Slayer sells 16 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Spanky's Zombie Slayer holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Spanky's Zombie Slayer has 834 ratings behind it against 69, so its average is the more settled of the two. Written reviews point the same way: 47% of COSMO PANIC's written reviews are positive against 60% of Spanky's Zombie Slayer's.

UpkeepUpdate frequency

COSMO PANIC ships an update weekly, Spanky's Zombie Slayer every 3 weeks. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.

Scorecard6 real differences · 4 level
COSMO PANIC versus Spanky's Zombie Slayer: the parameters behind the verdict, then further details
ParameterCOSMO PANICSpanky's Zombie Slayer
PriceFreeFree
Rating4.4 (69 ratings)4.8 (834 ratings) — better
Positive reviews47.2% of reviews59.6% of reviews — better
Number of ratings69834 — better
Update frequencyWeekly — betterEvery 3 weeks
AdsNo — betterYes
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
Size261 MB322 MB
Age rating4+12+
DeveloperFUNDOSHI PARADE K.K.Lightheart Entertainment

Customer experience

COSMO PANIC

All ratings69 ratings
Positive85.5%
Neutral4.3%
Negative10.1%
Written reviews36 reviews
Positive47.2%
Neutral25.0%
Negative27.8%

Spanky's Zombie Slayer

All ratings834 ratings
Positive95.2%
Neutral1.9%
Negative2.9%
Written reviews52 reviews
Positive59.6%
Neutral13.5%
Negative26.9%

In-app purchases

24 purchases

COSMO PANIC

One-time24
  • デイリーパック$0.99
  • ジェム80個$0.99
  • Hard 5 Bosses Defeated!!$1.99
Show 21 more
  • Normal 5 Bosses Defeated!!$1.99
  • ノーマル15ボス撃破記念!! チャンスパック$2.99
  • Beginner Pack$3.49
  • Mega Daily Pack$5.49
  • ジェム500個$5.99
  • Normal 10 Bosses Defeated!!$6.99
  • Unit Upgrade Pack$6.99
  • 30-Day Gem Pack$6.99
  • Money Boost 50$7.99
  • Mecha Slot Unlock Pack I$10.99
  • 10x Stone Pack$10.99
  • 広告非表示パック$11.49
  • ジェム1200個$11.49
  • Attack Power Stone Pack 2$11.99
  • Attack Power Stone Pack 3$11.99
  • PremiumPass:Hard$12.99
  • プレミアムパス(ノーマル)$12.99
  • Hard 15 Bosses Defeated!!$25.99
  • Money Boost 150$26.99
  • Mecha Slot Unlock Pack III$38.99
  • ジェム14000個$111.99
16 purchases

Spanky's Zombie Slayer

One-time16
  • Shop Offer2 variants$1.99
  • Gem Pack XS$1.99
  • Shop offer$2.99
Show 13 more
  • Gem Pack S$4.99
  • Club Card 03$4.99
  • Shop offer$4.99
  • Shop Offer$4.99
  • Minigame 01$5.99
  • Season Pass$9.99
  • Trust Fund 01$9.99
  • Shop offer$9.99
  • Shop Offer$14.99
  • Trust Fund 02$19.99
  • Shop offer2 variants$19.99
  • Shop offer$29.99
  • Supreme Pass$29.99

Questions

Is COSMO PANIC free?
COSMO PANIC is free to download, with in-app purchases available.
Is Spanky's Zombie Slayer free?
Spanky's Zombie Slayer is free to download, with in-app purchases available.
Which has better reviews, COSMO PANIC or Spanky's Zombie Slayer?
Spanky's Zombie Slayer is rated higher. COSMO PANIC averages 4.4 out of 5 from 69 ratings, while Spanky's Zombie Slayer averages 4.8 from 834 ratings.
Do COSMO PANIC or Spanky's Zombie Slayer have ads?
Spanky's Zombie Slayer shows ads; COSMO PANIC does not.
Which is updated more often, COSMO PANIC or Spanky's Zombie Slayer?
COSMO PANIC ships an update weekly, and Spanky's Zombie Slayer every 3 weeks. Most recently, COSMO PANIC was updated on September 20, 2026 and Spanky's Zombie Slayer on September 22, 2026.

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