Comparison

Colonies at War vs Koi

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

Head to head
About

Colonies at War

Engage in a 19th-century global conquest by building armies and navies. Choose from 28 nations, expand your territory through strategic warfare, and forge alliances to dominate the world stage.

Highlights
  • 19th-century colonial setting
  • Build and command armies
  • Naval warfare and sea control
  • Choose from 28 nations
  • Conquer territories
  • Form alliances
Features
Read full description

Colonies at War is a game set in the 19th century during the rush by colonial powers to colonize the known world. It's a game of building armies and crushing enemies. Pick one of the 28 nations available, look for the best lands nearby, then send in your armies to conquer them. Make allies of your friends, and war on your enemies. Build your navies to control the seas and become the greatest nation in history.

About

Koi

Control two fish simultaneously in this challenging reflex game. Dodge falling obstacles with precise timing across multiple game modes. Utilize a temporary invincibility power-up to survive longer and compete on global leaderboards.

Highlights
  • Control two fish simultaneously
  • Three distinct game modes
  • Temporary invincibility power-up
  • Game Center leaderboards
  • Simple tap controls
Features
Read full description

Koi Rush is a reflex game built around a simple but brutal idea, control two fish at the same time. Your left thumb controls the white fish. Your right thumb controls the black fish. Obstacles fall, you dodge. One hit and it's over. Three Modes: -Solo — one fish, four lanes. The left side is dark, the right side is light. Your fish changes color as it crosses between them. Simple to learn, hard to master. -Classic — both fish dodge falling obstacles at the same time. Stay alive as long as you can. -Insane — the left side is flipped. Your white fish starts at the top while obstacles rise from below. Your brain will fight itself. Phase Meter: -Dodge enough obstacles and your phase meter fills up. Tap it to go invincible for a few seconds, use it wisely. Game Center Leaderboards: -Compete globally across all three modes. See how long you last against the world. Simple controls. No tutorials needed. Just tap and survive.

Screenshots

Colonies at War4 screens
Koi4 screens

Verdict

The call

The clearest difference is in-app purchases: Koi at none against Colonies at War's 5. Koi also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 76%). Colonies at War's advantage is ratings volume (3.8K vs 1) and device support (3 vs 1). On price 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

Both are free to download. Colonies at War sells 5 one-off in-app purchases. Koi asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Koi holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Colonies at War has 3.8K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 76% of Colonies at War's written reviews are positive against 100% of Koi's.

UpkeepUpdate frequency

Colonies at War ships an update fortnightly, Koi every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard8 real differences · 2 level
Colonies at War versus Koi: the parameters behind the verdict, then further details
ParameterColonies at WarKoi
PriceFreeFree
Rating4.6 (3.8K ratings)5.0 (1 ratings) — better
Positive reviews76.0% of reviews100.0% of reviews — better
Number of ratings3.8K — better1
Update frequencyFortnightlyEvery 5 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.6
Further details — not scored
Size362 MB15 MB
Age rating4+9+
Developerwombi pty ltdMohamed Kaid

Customer experience

Colonies at War

All ratings3,763 ratings
Positive90.1%
Neutral3.3%
Negative6.6%
Written reviews512 reviews
Positive76.0%
Neutral8.8%
Negative15.2%

Koi

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Colonies at War

Reported bugs

4 issues
  • Game crashes after turns
  • Movement and combat issues
  • Incorrect troop/unit behavior
  • Persistent save data problems

Requested features

6 requests
  • Multiplayer mode
  • More historical scenarios
  • Improved diplomacy system
  • Customizable game modes
  • Expanded unit variety
Show 1 more
  • Detailed statistics and analytics

Koi

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Colonies at War

One-time5
  • Purchase 10 random contracts.$3.99
  • Buy 2,500 credits$3.99
  • Buy Full Game$5.99
Show 2 more
  • Purchase 30 random contracts.$7.99
  • Buy 8,000 credits$7.99
None

Koi

No in-app purchases

Questions

Is Colonies at War free?
Colonies at War is free to download, with in-app purchases available.
Is Koi free?
Koi is free to download, with no in-app purchases.
Which has better reviews, Colonies at War or Koi?
Koi is rated higher. Colonies at War averages 4.6 out of 5 from 3.8K ratings, while Koi averages 5.0 from 1 ratings.
Do Colonies at War or Koi have ads?
Both Colonies at War and Koi show ads.
Which is updated more often, Colonies at War or Koi?
Colonies at War ships an update fortnightly, and Koi every 5 days. Most recently, Colonies at War was updated on November 3, 2026 and Koi on October 31, 2026.

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