Comparison

Fieldrunners 2 vs Fault Line

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

Head to head
About

Fieldrunners 2

Defend the world from an alien invasion by strategically placing a variety of upgradable weapons. Engage in over 20 levels across diverse environments, utilizing airstrikes and traps to defeat enemies. Experience new gameplay styles like Puzzle, Sudden Death, and Time Trial.

Highlights
  • 20 unique, upgradable weapons
  • Over 20 levels across diverse environments
  • Refreshing game modes (Time Trial, Sudden Death, Puzzle)
  • Revolutionary AI with stunning realism
  • Air strikes, mines, and powerful items
  • Gorgeous artwork at full Retina resolution
  • iCloud support for save transfers
Features
Read full description

OVERVIEW The fieldrunners are back! With legions of soldiers and a gaggle of new tricks, they’re ready to conquer the globe. Or so they think! Our top scientists at SubaLabs have built a bleeding-edge arsenal of devastating weapons for any heroes willing to stop these dastardly invaders. Help your people by taking action - DEFEND THE WORLD! Strategic-Action-Puzzle-Defense has never been this fun and addicting! Defend your world from the invasion by building winding paths out of imaginative, new weapons. Call in airstrikes and set explosive traps to hit the enemies where it hurts. Over 20 new levels span the grassiest fields, driest deserts, sparkling cities, and even an infernal volcano lair! Challenge your mind with the exciting new gameplay styles in Puzzle, Sudden Death, and Time Trial levels. Are you ready to stop the fieldrunners once and for all? Join the defense now! KEY FEATURES • Gorgeous artwork at full Retina resolution! • Tons of levels - countless hours of action! • 20 unique, upgradable weapons! • Revolutionary AI with stunning realism! • Pick the perfect weapons for each battle! • Air strikes, mines, and powerful items! • Refreshing game modes, which include Time Trial, Sudden Death, and Puzzle maps! • Trenches, bridges, and tunnels! • Elite enemies invade at the most unexpected times! • iCloud support lets you transfer saves between your devices! • A tower that launches bee hives! OFFICIAL TRAILER https://www.youtube.com/watch?v=t6AK8w50354 AWARDS • Kotaku - Gaming App of the Day • GameTrailers - App of the Day • G4TV - Best Mobile Games • Macworld - Editors’ Choice • 148Apps - Editor’s Choice • Slide to Play - Game of the Month • AppAdvice - Game of the Week • Chicago Tribune - Game of the Week • TUAW - App of the Day QUOTES • IGN: “One of the best iOS games of 2012” • Penny Arcade: "This is a game that everyone needs to try" • New York Times: "At last we have a sequel!" • G4TV: “You need to download this game immediately” • TouchArcade: “It will eat your soul and have you thanking it” • CNET: “You will love this game” • The Verge/Polygon: “One of the strongest TD games I’ve ever played” • 148Apps: “The king of tower defense returns!” • GamesBeat: “Innovating and redefining tower defense” • Apple’N’Apps: “The best game we saw at E3” CONTACT SUBATOMIC STUDIOS • Twitter: @Fieldrunners • Facebook: facebook.com/fieldrunners • Web: subatomicstudios.com • Forums: subatomicstudios.com/forum • Tech Support: bugs[at]subatomicstudios.com THANK YOU Everyone here at Subatomic Studios thanks you for playing! Please take a moment to rate Fieldrunners 2.

About

Fault Line

This puzzle adventure game challenges players to match gems while managing dynamic board mechanics. Strategically handle rising pressure, contain spreading lava, and overcome escalating hazards. Push your skills to the limit with unique game modes and powerful abilities.

Highlights
  • Hundreds of handcrafted levels
  • Three unique game modes
  • Strategic pressure management
  • Dynamic lava and obstacle mechanics
  • Powerful special gems and abilities
  • Player progression and achievements
  • Endless mode with global leaderboards
Features
Read full description

Fault Line is a puzzle game where every move matters. Match gems, manage rising pressure, contain spreading lava, and overcome increasingly difficult challenges as you push your skills to the limit. Unlike traditional match-3 games, Fault Line introduces dynamic board mechanics that force players to think several moves ahead. Every decision impacts board stability, resource management, and your ability to survive escalating hazards. FEATURES • Hundreds of handcrafted levels • Three unique game modes • Strategic pressure management system • Dynamic lava and obstacle mechanics • Powerful special gems and abilities • Daily rewards and missions • Player progression and achievements • Endless mode with global leaderboards • Challenge mode featuring reactor destruction objectives • Frequent updates and new content CLASSIC MODE Progress through increasingly difficult levels while managing Vector Shifts, Convert Charges, pressure surges, rocks, and lava hazards. Learn new mechanics and master the systems that make Fault Line unique. ENDLESS MODE How long can you survive? Pressure continues to rise as the board becomes more unstable. Compete for high scores and climb the leaderboards against players from around the world. CHALLENGE MODE Solve carefully designed puzzle scenarios with unique objectives. Destroy reactors, clear obstacles, and discover new ways to approach each board. UNLOCK POWERFUL ABILITIES Use special gems to turn the tide: • Quantum Core • Prism Spike • Volt Surge • Void Pulse • Fracture Star Each ability offers new strategic opportunities and can mean the difference between victory and collapse. COMPETE. ADAPT. SURVIVE. Whether you're looking for a relaxing puzzle experience or a deep strategic challenge, Fault Line delivers a unique blend of puzzle-solving, risk management, and progression that keeps every game feeling fresh. Can you contain the instability before everything collapses?

Screenshots

Fieldrunners 24 screens
Fault Line4 screens

Verdict

The call

The clearest difference is review sentiment: Fault Line at 100% against Fieldrunners 2's 50%. Fault Line also leads on rating (5.0 vs 4.1) and update cadence (every 2 days vs every 6 weeks). Fieldrunners 2's advantage is ads (none vs shown) and ratings volume (1.5K vs 5). 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. Fieldrunners 2 sells 7 one-off in-app purchases and Fault Line sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Fault Line holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Fieldrunners 2 has 1.5K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 50% of Fieldrunners 2's written reviews are positive against 100% of Fault Line's.

UpkeepUpdate frequency

Fieldrunners 2 ships an update every 6 weeks, Fault Line every 2 days. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
Fieldrunners 2 versus Fault Line: the parameters behind the verdict, then further details
ParameterFieldrunners 2Fault Line
PriceFreeFree
Rating4.1 (1.5K ratings)5.0 (5 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings1.5K — better5
Update frequencyEvery 6 weeksEvery 2 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size147 MB70 MB
Age rating9+4+
DeveloperSubatomic Studios, LLCKris Morin

Customer experience

Fieldrunners 2

All ratings1,467 ratings
Positive75.5%
Neutral4.8%
Negative19.8%
Written reviews502 reviews
Positive50.0%
Neutral12.0%
Negative38.0%

Fault Line

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Fieldrunners 2

Reported bugs

5 issues
  • Coins don't work for purchases
  • Buttons to buy towers and items are broken
  • Crashes on loading screen
  • Progress and purchases lost after reinstall
  • Incompatible with iPhone X and newer models

Requested features

5 requests
  • Update the game for newer iOS versions
  • Add more levels and content
  • Implement a sandbox mode
  • Allow turning off tutorial
  • Improve bottom row tower placement

Fault Line

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Fieldrunners 2

One-time7
  • 2,000 Coins$2.99
  • Field Commission$4.99
  • 7,000 Coins$8.99
Show 4 more
  • 14,000 Coins$12.99
  • 30,000 Coins$19.99
  • 70,000 Coins$39.99
  • 200,000 Coins$99.99
10 purchases

Fault Line

One-time10
  • Quantum Core$0.99
  • Prism Spike$0.99
  • Volt Surge$0.99
Show 7 more
  • Void Pulse$0.99
  • Fracture Star$0.99
  • Coins Bundle 750$2.99
  • Starter Bundle$4.99
  • Remove Ads$4.99
  • Coins Bundle 2000$6.99
  • Legendary Bundle$24.99

Questions

Is Fieldrunners 2 free?
Fieldrunners 2 is free to download, with in-app purchases available.
Is Fault Line free?
Fault Line is free to download, with in-app purchases available.
Which has better reviews, Fieldrunners 2 or Fault Line?
Fault Line is rated higher. Fieldrunners 2 averages 4.1 out of 5 from 1.5K ratings, while Fault Line averages 5.0 from 5 ratings.
Do Fieldrunners 2 or Fault Line have ads?
Fault Line shows ads; Fieldrunners 2 does not.
Which is updated more often, Fieldrunners 2 or Fault Line?
Fieldrunners 2 ships an update every 6 weeks, and Fault Line every 2 days. Most recently, Fieldrunners 2 was updated on November 10, 2026 and Fault Line on October 31, 2026.

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