Comparison

Radiation Island vs Bright Memory

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

Head to head
About

Radiation Island

Embark on a survival adventure in a vast open world, stranded in an alternate reality. Explore, craft, and fight to uncover secrets and find your way back home. Survive harsh environments, dangerous creatures, and the undead.

Highlights
  • Open-world exploration
  • Crafting and resource gathering
  • Combat against wildlife and zombies
  • Day-night cycle and weather effects
  • Underwater exploration
  • Multiplayer arena mode
Features
Read full description

Radiation Island is a survival adventure game where you craft your own destiny in a huge open world environment. As part of the Philadelphia Experiment you have become stranded in a parallel, alternate reality. Discover this new and mysterious world, with all its surprises. Use everything you find to survive it and solve its puzzle to get back to the real world. Follow your own path in an environment of breathtaking beauty and gigantic scope. Explore huge forests inhabited by dangerous wolves, bears and mountain lions. Investigate abandoned villages and old military compounds where zombies guard vital tools, weapons and clues to the secrets of this world. You can even swim and dive, if you can avoid the hungry crocodiles. Hunt wild animals, fish or gather fruits to overcome hunger. Mine for resources and craft weapons, tools and basic vehicles. Find hidden treasures, equipment and fire arms to prevail in a world full of perils: radiation, anomalies, harsh weather and enraged zombies. Experience the full day-night cycle and face the dangers of darkness and cold. Survive and beat the game to unlock multiplayer mode: fight other real players online in a closed arena for valuable resources. AMAZING QUALITY, AND IT’S ONLY ON iOS! Optimized for the iPhone 6 and 6 Plus and the new A8 processors with greater environmental detail, spectacular visual effects and unparalleled performance! Takes advantage of Metal on A7 and A8 devices to provide cutting edge graphics. GAME CENTER, AirPlay and iCloud iCloud support is integrated so players can save and share progress across devices. AirPlay lets you play the game on larger displays via Apple TV. Climb the Game Center leaderboards, challenge friends and unlock dozens of achievements. Supports iOS MFi Game Controllers. Important: iPhone 4 and older devices are not supported.

About

Bright Memory

Experience a thrilling blend of FPS and action in a futuristic world. Investigate a mysterious global phenomenon by combining unique skills, sword combat, and customizable firearms. Explore an ancient history connecting two worlds.

Highlights
  • FPS and action genre blend
  • Skill and ability combos
  • Sword combat
  • Customizable firearms
  • Gyroscope aiming support
  • Controller support
Read full description

In the year 2036, a strange phenomenon for which scientists can find no explanation has occurred in the skies around the world. The Supernatural Science Research Organization (SRO) has sent agents out to various regions to investigate this phenomenon. It is soon discovered that these strange occurrences are connected to an archaic mystery - an as-of-yet unknown history of two worlds, about to come to light... Bright Memory: Infinite combines the FPS and action genres to deliver a high-octane experience. Mix and match available skills and abilities to unleash magnificient combos on your enemies. Your trusted sword allows you to slash through crowds of enemies and even repel their gunfire. The guns you come across in-game can be customized with a variety of ammunitions. Choose between incendiary bombs, sticky grenades, homing missiles, and more to suit your situation. [Features] - Support gyroscope control aiming. - Support full button transparency and size customization. - Support XBOX wireless controller control.

Screenshots

Radiation Island4 screens
Bright Memory4 screens

Verdict

The call

The clearest difference is in-app purchases: Radiation Island at none against Bright Memory's 9. Radiation Island also leads on ratings volume (649 vs 48). Bright Memory's advantage is update cadence (every 3 days vs every 3 weeks). On price, rating, review sentiment 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

CostPrice · In-app purchases · Ads · Monetization

Radiation Island costs $4.99 and Bright Memory $4.99 up front. Bright Memory sells 9 one-off in-app purchases. Radiation Island asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.3 for Radiation Island against 4.4 for Bright Memory. That said, the two scores are not equally well evidenced: Radiation Island has 649 ratings behind it against 48, so its average is the more settled of the two. Written reviews are what separate them: 74% of Radiation Island's written reviews are positive against 67% of Bright Memory's.

UpkeepUpdate frequency

Radiation Island ships an update every 3 weeks, Bright Memory every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
Radiation Island versus Bright Memory: the parameters behind the verdict, then further details
ParameterRadiation IslandBright Memory
Price$4.99$4.99
Rating4.3 (649 ratings)4.4 (48 ratings) — better
Positive reviews73.9% of reviews — better67.0% of reviews
Number of ratings649 — better48
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS1514.0 — better
Further details — not scored
Size2.3 GB2.4 GB
Age rating12+17+
DeveloperAtypical Games贤成 曾

Customer experience

Radiation Island

All ratings649 ratings
Positive82.1%
Neutral5.4%
Negative12.5%
Written reviews1,173 reviews
Positive73.9%
Neutral8.0%
Negative18.1%

Bright Memory

All ratings43 ratings
Positive83.7%
Neutral2.3%
Negative14.0%
Written reviews97 reviews
Positive67.0%
Neutral12.4%
Negative20.6%

User reviews

Radiation Island

From 649 App Store ratings

What we love

  • 🚀 PLEASE KEEP UPDATING
  • 👍 Enjoyable for years
  • 👍 Immersive environment
  • 👍 Tense atmosphere
  • 👍 Open world with variety

Room to improve

  • 🐛 Crashes and resets progress
  • 🐛 Glitches with building
  • 🐛 Laggy performance in certain areas
  • 🔋 Battery draining
  • 🐛 Disappearing items and chests

Bright Memory

From 48 App Store ratings

What we love

  • 👍 Great graphics
  • 💡 Excellent with a controller
  • 🚀 Fun mechanics

Room to improve

  • 🐛 Bugs and issues with controls
  • 🔧 Needs improvements for iPad devices
  • 💰 Expensive in-app purchases

Bugs and requests

Radiation Island

Reported bugs

5 issues
  • Crashes causing loss of progress
  • Glitches with building and structures
  • Disappearing items and chests
  • Laggy performance in certain areas
  • Compatibility issues with newer iOS versions

Requested features

8 requests
  • Creative mode with unlimited resources
  • Multiplayer co-op
  • More vehicles (cars, boats, etc.)
  • Expanded crafting and building options
  • More enemy variety and difficulty
Show 3 more
  • Additional weapons (grenades, flamethrowers, etc.)
  • Weather effects (rain, storms, etc.)
  • Ability to tame animals as companions

Bright Memory

Reported bugs

3 issues
  • Buttons not programmed properly for iOS
  • Unable to complete identity verification
  • Touch controls issues on iPad

Requested features

3 requests
  • Add controller vibration support
  • Allow customization of touch controls
  • Optimize controls for PlayStation controller

In-app purchases

None

Radiation Island

No in-app purchases

9 purchases

Bright Memory

One-time9
  • Black Kitten Pack$0.99
  • 学院兔皮肤$0.99
  • Cyber Rabbit$0.99
Show 6 more
  • Energetic Pack$0.99
  • Youthful Days Pack$0.99
  • Cheongsam (New Year) Pack$0.99
  • Cheongsam (Blue Flowers)$0.99
  • Bikini Pack$0.99
  • Skinny Jeans Pack$0.99

Questions

Is Radiation Island free?
Radiation Island costs $4.99, with no in-app purchases.
Is Bright Memory free?
Bright Memory costs $4.99, and also offers in-app purchases.
Which has better reviews, Radiation Island or Bright Memory?
Bright Memory is rated higher. Radiation Island averages 4.3 out of 5 from 649 ratings, while Bright Memory averages 4.4 from 48 ratings.
Do Radiation Island or Bright Memory have ads?
Neither Radiation Island nor Bright Memory shows ads.
Which is updated more often, Radiation Island or Bright Memory?
Radiation Island ships an update every 3 weeks, and Bright Memory every 3 days. Most recently, Radiation Island was updated on October 24, 2026 and Bright Memory on October 25, 2026.

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