# FireLine: Merge Defense — Best merge tower defense game

> Merge cannons to upgrade defenses and defeat cube armies in this tower defense game. (iPhone/iPad app by 乐迪 童.)

- Source: https://appshunter.io/ios/app/fireline-merge-defense/id1525058607 (this page in markdown: same URL + `.md`)
- Developer: [乐迪 童](https://appshunter.io/developer/1441759951)
- Category: Games, Casual, Strategy
- Price: Free with in-app purchases
- Rating: 4.58/5 from 531 App Store ratings · 38 written reviews indexed
- Age rating: 12+
- Requires: iOS 12.0 · 132 MB
- Languages: English
- Released: 2020-07-26
- Data updated: 2026-08-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/fireline-merge-defense/id1525058607/reviews.md

## What is FireLine?

Fireline is a super addictive Tower Defense game that allows you to Merge Cannon to defeat the Cube army rush!

Unlock a variety of cannon in your arsenal. Merge to upgrade the cannon and position tactically to defend against increasingly powerful waves of cubes and deadly bosses.

Regardless whether you are a merge fan or tower defense veterans, Fireline will provide a familiar yet fresh and exciting experience!

## Key features

- Merge cannons for upgrades
- Strategic defense positioning
- Defeat cube armies
- Battle deadly bosses
- Unlock various cannons

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 200GEM | $1.99 | one-time |
| 600 GEM | $4.99 | one-time |
| 1400 GEM | $9.99 | one-time |
| 3000 GEM | $19.99 | one-time |
| 6500 GEM | $39.99 | one-time |
| No ads | $3.99 | one-time |
| Remove Ads | $1.99 | one-time |


## What do users think of FireLine?

Overall sentiment: negative

**Pros**

- 🎮 Engaging gameplay mechanics
- ⚡ Quick progression and rewards
- ✨ Fun and entertaining experience

**Cons**

- 📢 Excessive and intrusive ads (2-3 per minute)
- 💰 Misleading 'no ads' premium option still shows banner ads
- 🔄 Repetitive and redundant ad placements
- ⏱️ More time watching ads than playing
- 🚫 Forced ads even when declining rewards
- ❌ Unplayable without ad interruptions
- 🔧 Game freezes when purchasing ad removal
- ⚠️ Suspicious bot-like 5-star reviews with generic names

**Commonly reported bugs**

- Game freezes when attempting to purchase ad removal
- Offline earnings ads fail to deliver promised rewards
- Declining ad offers still plays the ad without reward
- Game doesn't load past black screen on some devices
- Ad-related lag and performance issues

**Most requested features**

- Optional ad system similar to Battle Cats model
- Ability to turn off auto-merge/power-up upgrades
- Reduced frequency of confirmation popups
- Streamlined reward collection process
- Ad-free gameplay option that actually works
- Less intrusive ad placement strategy

## Recent user reviews (10 of 38)

All indexed reviews: https://appshunter.io/ios/app/fireline-merge-defense/id1525058607/reviews.md

### 1/5 — NOT WORTH IT!!

*2025-12-29, version 6.6.7*

Just downloaded the game. Seemed cool, until 2 minutes in to the game and it’s ADs on ADs on ADS. YOU CANT EVEN PLAY without ads coming up and interrupting. Just erase the app. Again not worth it

### 4/5 — Idk

*2024-02-03, version 5.3.8*

Please remove the no advertising bit

### 1/5 — Stay away

*2023-12-31, version 5.3.8*

Forced adverts 
The more games we all avoid that force adverts the quicker devs will stop

### 1/5 — No Ads does not mean no ads

*2023-03-04, version 5.3.8*

If you pay to remove ads, the ‘pop up’ ads go away, but there are still ‘banner’ ads shown. Extremely misleading, and I’ll be requesting a refund.

### 1/5 — spamming designed as a game

*2022-11-11, version 5.3.8*

So many freaking stupid pop up’s every couple of minutes ruin what could have been a fun little game. Don’t bother paying for ad free either, you’ll still get spammed with pop up’s. The game designer hates players to make this abomination of a game.

### 1/5 — Rating bots that lie. Anyways tons of ads.

*2022-10-10, version 5.3.8*

The names for the 5 star reviews are like hahsjs. And my name is hehrjdj. I’m a human that doesn’t have an account. Sorry due to not wanting my App Store to be Spanish. Anyways there like ads all over th place. Just by doing everything you will get 10 ads. Ridiculously bad. Never recommend unless if your a stupid 4 year old. Only 5 minutes of playing and got like 49 ads. Pls read without laziness like abi does now.

### 4/5 — To much

*2022-07-14, version 5.3.8*

OK I love this game but there are way too much ads sometimes when I don’t click on the things a ad shows up and I get a reward or it’s just a ad for no reason and also please make it option where you can turn off the power up I hate the auto merge upgrade and please less ads

### 1/5 — Buggy

*2022-06-22, version 5.3.8*

Trying to buy no ads freezes the game. Unplayable with ads.

### 1/5 — Too many ads

*2022-04-30, version 5.3.8*

Impossible to play, ads every 30 seconds…

### 5/5 — I change my opinion

*2022-03-15, version 5.3.8*

I paid for remove ads and it’s finally updated

## Frequently asked questions about FireLine

### What is FireLine: Merge Defense?

FireLine is a highly addictive game that combines merge mechanics with tower defense strategy. Players merge cannons to upgrade them and strategically place them to defend against waves of cube enemies and bosses.

### How do I upgrade cannons in FireLine?

You upgrade cannons by merging identical cannons together. This process creates a more powerful version of the cannon, enhancing its offensive capabilities to better defend your base.

### Is FireLine: Merge Defense free to play?

Yes, the game is free to download and play. It does offer in-app purchases, which can provide additional benefits or accelerate progress, and also includes advertisements.

### Who is this game for?

This game is designed for players who enjoy the strategic depth of tower defense games and the satisfying progression of merge mechanics. It offers a familiar yet fresh experience for both merge fans and tower defense veterans.

## Version history (last 5 releases)

### 6.6.7 — 2024-02-28

-Bug Fixed

### 5.3.8 — 2021-12-08

-Bug Fixed

### 5.1.8 — 2021-11-10

- BUG FIX

### 4.8.8 — 2021-10-17

- Halloween event starts
- BUG FIX

### 4.0.8 — 2021-05-19

-bug fix

## Apps similar to FireLine

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Rumble Rivals: Tower Defense](https://appshunter.io/ios/app/rumble-rivals-tower-defense/id1599244551) | 4.6 (1,184) | Free | Games |
| [The Tower - Idle Tower Defense](https://appshunter.io/ios/app/the-tower-idle-tower-defense/id1575590830) | 4.2 (19,568) | Free | Games |
| [Rush Royale: Tower Defense RPG](https://appshunter.io/ios/app/rush-royale-tower-defense-rpg/id1526121033) | 4.5 (95,328) | Free | Games |
| [North Tower! Merge TD Defense](https://appshunter.io/ios/app/north-tower-merge-td-defense/id1626431061) | 4.7 (852) | Free | Games |
| [Idle Monster TD: Tower Defense](https://appshunter.io/ios/app/idle-monster-td-tower-defense/id1608286308) | 4.7 (819) | Free | Games |
| [Crazy Kings Tower Defense Game](https://appshunter.io/ios/app/crazy-kings-tower-defense-game/id924907196) | 4.7 (1,867) | Free | Games |

## More apps by 乐迪 童

- [Super Chain Bomb](https://appshunter.io/ios/app/super-chain-bomb/id1464623982)
- [Perfect Shot: into Hole](https://appshunter.io/ios/app/perfect-shot-into-hole/id1473907608)
- [Chaos Racer: Merge & Fight](https://appshunter.io/ios/app/chaos-racer-merge-and-fight/id1480822487)
- [Hangman: Who Hangs the Hangman](https://appshunter.io/ios/app/hangman-who-hangs-the-hangman/id1489294947)
- [Shooting The Pixel](https://appshunter.io/ios/app/shooting-the-pixel/id1501939091)

All apps by 乐迪 童: https://appshunter.io/developer/1441759951

## Related topics

[merge army tower](https://appshunter.io/ios/topics/merge-army-tower) · [tower defence merge](https://appshunter.io/ios/topics/tower-defence-merge) · [merge battle defense](https://appshunter.io/ios/topics/merge-battle-defense) · [merge tower game](https://appshunter.io/ios/topics/merge-tower-game) · [merge tower defense 2021](https://appshunter.io/ios/topics/merge-tower-defense-2021) · [merge tower war](https://appshunter.io/ios/topics/merge-tower-war)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*