Colonies at War vs Koi
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- 19th-century colonial setting
- Build and command armies
- Naval warfare and sea control
- Choose from 28 nations
- Conquer territories
- Form alliances
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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.
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.
- Control two fish simultaneously
- Three distinct game modes
- Temporary invincibility power-up
- Game Center leaderboards
- Simple tap controls
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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
Verdict
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
Both are free to download. Colonies at War sells 5 one-off in-app purchases. Koi asks for nothing beyond the download.
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.
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.
| Parameter | Colonies at War | Koi |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (3.8K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 76.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3.8K — better | 1 |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 362 MB | 15 MB |
| Age rating | 4+ | 9+ |
| Developer | wombi pty ltd | Mohamed Kaid |
Customer experience
Colonies at War
Koi
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
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- Detailed statistics and analytics
Koi
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Colonies at War
- Purchase 10 random contracts.$3.99
- Buy 2,500 credits$3.99
- Buy Full Game$5.99
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- Purchase 30 random contracts.$7.99
- Buy 8,000 credits$7.99
Koi
No in-app purchases









