Comparison

Defrag Game vs Crash Dive 2

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

Head to head
About

Defrag Game

A simple yet addictive puzzle strategy game where players rearrange colored blocks into larger groups of the same color. The goal is to fill empty slots with adjacent blocks of matching colors to complete the game and achieve a high score.

Highlights
  • Rearrange colored blocks
  • Group same-colored blocks
  • Drag blocks into empty slots
  • Score based on time and moves
  • Compactness ratio scoring
  • Multiple difficulty levels
Features
Read full description

***** - "Very addictive once you master the method - A very easy game to pick up and play at any time with lots of ways to improve your score each time. Great idea!" "This is the nerdiest game I've seen for a while. Love it!" - pfg​2009 DefragGame is a fun, simple and highly addictive puzzle strategy game where goal is to arrange the colour blocks into larger same colour groups by reorganising them. Do this by dragging them into empty slots next to the same colour. The game is complete when there are no fragments left. Your score starts at 1,500 on easy, 2,000 on medium and 2,500 on hard. You lose 10 points per second taken and 2 points per move made. That score is then multiplied by your compactness ratio. Fewer gaps between the beginning and end of all the files means a better compactness ratio and a higher score.

About

Crash Dive 2

Command a Gato-class submarine in the South Pacific, hunting enemy convoys and engaging in naval combat. Utilize stealth or direct offense, manage your crew, and upgrade your vessel through a lengthy campaign or random missions. Features dynamic weather and day/night cycles.

Highlights
  • Submarine simulation with arcade action
  • Stealth and offensive combat options
  • Day/night cycle and weather effects
  • Crew management and damage control
  • Submarine upgrade tech tree
  • Campaign mode and random missions
  • Modding editor
Features
Read full description

Hunt enemy convoys, battle destroyers, attack land bases, and shoot down aircraft in this long-awaited sequel to the best-selling "Crash Dive". Take command of a Gato-class submarine prowling the South Pacific in search of enemy shipping to sink. Sneak past the destroyers and torpedo the transports, or surface and engage the sub-chasers in a duel with your deck gun. When the enemy planes come in on a strafing run, man your AA guns to take them down! Evade the hunting escorts before they can crush you with their depth charges. Features: * Smoothly blends a submarine simulator with arcade action. * Provides the tools for both stealth and offense; you decide how aggressive you want to be. * Full day/night cycle and wide range of weather conditions affect visibility and weapons. * Crew health and location-based damage affects the performance of your sub. * Optional crew management and detailed damage control (or let the computer take care of that for you). * Optional upgrade tech tree for your sub (can also be left to the AI). * Lengthy campaign mode. * Random mission generator for deep replayability. * Both randomly-generated maps and real-world locales including the Solomon Islands, Philippines, Sea of Japan, and more! * Built-in modding editor lets you change every aspect of the game.

Screenshots

Defrag Game4 screens
Crash Dive 24 screens

Verdict

The call

The clearest difference is price: Defrag Game at Free against Crash Dive 2's $9.99. Defrag Game also leads on in-app purchases (none vs 2) and rating (5.0 vs 4.7). Crash Dive 2's advantage is ratings volume (319 vs 1) and update cadence (monthly vs every 4 months). On ads 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

Defrag Game is free to download; Crash Dive 2 costs $9.99 up front. Crash Dive 2 sells 2 one-off in-app purchases. Defrag Game asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Defrag Game holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Crash Dive 2 has 319 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 80% of Defrag Game's written reviews are positive against 93% of Crash Dive 2's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Defrag Game ships an update every 4 months, Crash Dive 2 monthly. The most recent releases landed on June 10, 2026 and September 25, 2026 respectively.

Scorecard8 real differences · 2 level
Defrag Game versus Crash Dive 2: the parameters behind the verdict, then further details
ParameterDefrag GameCrash Dive 2
PriceFree — better$9.99
Rating5.0 (1 ratings) — better4.7 (319 ratings)
Positive reviews80.0% of reviews93.2% of reviews — better
Number of ratings1319 — better
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.1 — better13.0
Further details — not scored
Size20 MB352 MB
Age rating4+12+
DeveloperNicholas ThompsonPanic Ensues Software

Customer experience

Defrag Game

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Crash Dive 2

All ratings319 ratings
Positive94.4%
Neutral1.6%
Negative4.1%
Written reviews206 reviews
Positive93.2%
Neutral1.9%
Negative4.9%

Bugs and requests

Defrag Game

Not enough reviews yet to summarise bugs or requests.

Crash Dive 2

Reported bugs

3 issues
  • Targeting reticle not appearing
  • Rudder commands causing uncontrolled circling
  • Game locking up unexpectedly

Requested features

5 requests
  • Add German U-boat campaign
  • Implement more historical accuracy
  • Introduce submarine tenders and friendly ports
  • Provide crew management and customization options
  • Add time acceleration feature

In-app purchases

None

Defrag Game

No in-app purchases

2 purchases

Crash Dive 2

One-time2
  • Aleutian Islands Expansion$4.99
  • East Indies Expansion$4.99

Questions

Is Defrag Game free?
Defrag Game is free to download, with no in-app purchases.
Is Crash Dive 2 free?
Crash Dive 2 costs $9.99, and also offers in-app purchases.
Which has better reviews, Defrag Game or Crash Dive 2?
Defrag Game is rated higher. Defrag Game averages 5.0 out of 5 from 1 ratings, while Crash Dive 2 averages 4.7 from 319 ratings.
Do Defrag Game or Crash Dive 2 have ads?
Neither Defrag Game nor Crash Dive 2 shows ads.
Which is updated more often, Defrag Game or Crash Dive 2?
Defrag Game ships an update every 4 months, and Crash Dive 2 monthly. Most recently, Defrag Game was updated on June 10, 2026 and Crash Dive 2 on September 25, 2026.

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