Comparison

Ultimate Briefcase vs Kaiju Rush

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

Head to head
About

Ultimate Briefcase

Engage in a survival simulator where you dodge relentless waves of automated machines. Utilize unique characters with upgradable abilities and explore diverse city environments to uncover the mystery behind the onslaught and the titular briefcase.

Highlights
  • Dodge automated machine onslaughts
  • Use ridiculous special moves
  • Unlock unique characters with upgradable abilities
  • Explore diverse city areas
  • Unlock items for survival and coins
  • Collect security footage to piece together the story
Features
Read full description

Hundreds of automated doomsday machines have been unleashed on the city. Survive waves of onslaught using your dodging skills and a variety of ridiculous special moves. Where did the mysterious bomb-dropping, laser-spewing machines come from? What is the Ultimate Briefcase? And what is in it? • Unlock a cast of unique characters, all with their own upgradable special abilities. • Explore different areas of the city, from the fiery alley to the treacherous trapdoors of the water works bridge. • Unlock new items to help you survive longer and rake in more coins. • Collect security footage to piece together the story, and find answers to some of the questions above. • No unlocks are purely cosmetic – everything you get has a real effect on the game. Important information This game contains third party advertising which can be removed via a one time IAP. This game contains coins which can be collected within the game for free or bought with real money.

About

Kaiju Rush

Control giant monsters to smash cities with simple one-tap gameplay. Upgrade your monsters to improve distance, unlock new creatures, and discover more buildings. Enjoy fun, destructive action.

Highlights
  • One-tap controls
  • Variety of Kaiju creatures
  • Monster upgrades
  • Improve distance
  • Unlock new monsters
  • Smash buildings
Features
Read full description

Ready, aim, and SMASH cities in Kaiju Rush! Select your favorite Kaiju monster and simply tap to bash buildings to bits and pieces. Don't forget to upgrade monsters and improve your distance. Get further to discover more buildings and to unlock more Kaiju monsters. Features: * Simple one-tap controls * A variety of Kaiju creatures * Upgrade to improve your distance * Super fun gameplay --- SUBSCRIPTION PRICING AND TERMS VIP MEMBERSHIP offers a weekly subscription, you will have a 3-days FREE trial period, after this period you will be charged $6.99. After buying this subscription you will unlock all VIP Aircraft, get 20 gems every day, get 100 coins every day, and removes forced ads. This is an Auto-renewable subscription. The payment is charged to your account after confirmation. The subscription is renewed unless you turn it off 24 hours before the period ends. Your account will be charged for renewal as well. End of trial and subscription renewal: • This price is for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. • Payment will also be charged to iTunes account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24 hours prior to the end of the current period. • The account will be charged for renewal within 24 hours prior to the end of the current period and identify the cost of the renewal. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. Any unused portion of the free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Canceling trial or subscription: You can turn off the auto-renew for the subscription whenever you want to through iTunes account. Check https://support.apple.com/HT202039. When your current trial/subscription period expires, you will be unsubscribed. The current active subscription period cannot be canceled. After your subscription expires, you will no longer be able to use elements offered in your chosen Subscription Option. If you have any questions or comments, feel free to contact us at support@lucky-kat.com Privacy Policy: https://www.lucky-kat.com/games-privacy-notice/ Terms of use: https://www.lucky-kat.com/terms-of-use/

Screenshots

Ultimate Briefcase4 screens
Kaiju Rush4 screens

Verdict

The call

Ultimate Briefcase and Kaiju Rush both sit at 4.4 stars, but that hides the real split: 66% of Ultimate Briefcase's written reviews are positive against 25% of Kaiju Rush's. Ultimate Briefcase also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.6). Kaiju Rush's advantage is update cadence (every 2 weeks vs every 2 months) and ratings volume (13K vs 214). On price, rating, 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. Ultimate Briefcase sells 4 one-off in-app purchases and Kaiju Rush sells 5 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Ultimate Briefcase against 4.4 for Kaiju Rush. That said, the two scores are not equally well evidenced: Kaiju Rush has 13K ratings behind it against 214, so its average is the more settled of the two. Written reviews are what separate them: 66% of Ultimate Briefcase's written reviews are positive against 25% of Kaiju Rush's.

UpkeepUpdate frequency

Ultimate Briefcase ships an update every 2 months, Kaiju Rush every 2 weeks. Both last shipped on October 21, 2026.

Scorecard5 real differences · 5 level
Ultimate Briefcase versus Kaiju Rush: the parameters behind the verdict, then further details
ParameterUltimate BriefcaseKaiju Rush
PriceFreeFree
Rating4.4 (214 ratings) — better4.4 (13K ratings)
Positive reviews66.0% of reviews — better25.3% of reviews
Number of ratings21413K — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.6
Further details — not scored
Size62 MB86 MB
Age rating9+9+
DeveloperNitromeLucky Kat Studios

Customer experience

Ultimate Briefcase

All ratings214 ratings
Positive86.4%
Neutral4.7%
Negative8.9%
Written reviews241 reviews
Positive66.0%
Neutral10.4%
Negative23.7%

Kaiju Rush

All ratings13,302 ratings
Positive84.8%
Neutral5.5%
Negative9.7%
Written reviews376 reviews
Positive25.3%
Neutral18.1%
Negative56.6%

User reviews

Ultimate Briefcase

From 214 App Store ratings

What we love

  • 👍 Great game, fun and addictive
  • 🎨 Beautiful pixel art and graphics
  • 🎶 Awesome chiptune music
  • 💰 Good value for free-to-play
  • 🔍 Interesting story and lore

Room to improve

  • 🐛 Crashes and bugs, especially after updates
  • 💰 Aggressive monetization, hard to progress without paying
  • 🕹️ Controls and difficulty curve issues
  • 🔍 Lack of content and progression after unlocking everything

Kaiju Rush

From 13K App Store ratings

What we love

  • 🚀 Cute and addictive gameplay
  • 👍 Adorable pixel art style
  • 🎨 Diverse and creative Kaiju designs

Room to improve

  • 🐛 Frequent bugs and glitches
  • 💰 Excessive ads and aggressive monetization
  • 🔋 Performance issues and crashes
  • 🤯 Frustrating subscription model

Bugs and requests

Ultimate Briefcase

Reported bugs

4 issues
  • Fatal errors causing app to crash
  • Glissant character slide not working properly
  • Game Center integration not functioning
  • Landscape mode issues with UI elements

Requested features

4 requests
  • More levels, characters, and power-ups
  • Improved save/sync functionality across devices
  • Accessibility options like high contrast mode
  • Ability to skip cutscenes and animations

Kaiju Rush

Reported bugs

4 issues
  • Kaiju getting stuck in infinite bouncing loop
  • Inability to select or hatch new Kaiju
  • Freezing and crashing during gameplay
  • Offline earnings not updating correctly

Requested features

4 requests
  • More unique Kaiju abilities and animations
  • Improved offline progress tracking
  • Reduced ad frequency and optional ad-free mode
  • Better progression system and content unlocks

In-app purchases

4 purchases

Ultimate Briefcase

One-time4
  • 500 Coins!$1.99
  • 2,000 Coins!$2.99
  • Remove Ads$3.99
Show 1 more
  • 5,000 Coins!$4.99
5 purchases

Kaiju Rush

Subscriptions1
  • King Kaiju Subscription3 Days trial$7.997 Days
One-time4
  • Gem Pack 1$1.99
  • No Ads$2.99
  • Gem Pack 2$4.99
Show 1 more
  • Gem Pack 3$11.99

Questions

Is Ultimate Briefcase free?
Ultimate Briefcase is free to download, with in-app purchases available.
Is Kaiju Rush free?
Kaiju Rush is free to download, with in-app purchases available.
Which has better reviews, Ultimate Briefcase or Kaiju Rush?
Ultimate Briefcase is rated higher. Ultimate Briefcase averages 4.4 out of 5 from 214 ratings, while Kaiju Rush averages 4.4 from 13K ratings.
Do Ultimate Briefcase or Kaiju Rush have ads?
Kaiju Rush shows ads; Ultimate Briefcase does not.
Which is updated more often, Ultimate Briefcase or Kaiju Rush?
Ultimate Briefcase ships an update every 2 months, and Kaiju Rush every 2 weeks. Most recently, Ultimate Briefcase was updated on October 21, 2026 and Kaiju Rush on October 21, 2026.

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