Bloons TD 4 Mobile is Bloons TD 4 for the iPhone and iPod Touch. The icon has the Mortar Tower on it. The iPhone/iPod Touch version of Bloons TD 4 is very similar to the online, Flash version of the game, and has the same choice of towers, the same upgrades, and the same ranking system. You can also save your game without a Ninja Kiwi account. (formerly MochiGames). Unlike the Flash version, you can save your game DURING freeplay mode, so you can exit freeplay mode and still continue from the last round finished.
On the Main Menu screen, there is a Sun God Temple that shoots light balls out of its eyes when lightning strikes it. When you press any of the tabs (Play Game, Options, Help, and About), the screen moves to the right for about 3 seconds.
On the 17th of May, 2012, they added the Beekeeper in an update, which you can unlock for popping 2 million bloons. It does exactly as it does in Bloons TD 5, but it has upgrades, and is not a Special Agent.
On some holidays, there are new tracks based on that holiday, and when you place towers on that track, they change their appearance based on the holiday (i.e. Dart Monkey to a zombie on Halloween, or a Spike Factory to a present on Christmas). There are currently 3 holiday tracks: Tannenbaum and Milk 'n' Cookies for Christmas, and Trick or Treat for Halloween.
As of November 2019, the Android version has been pulled from the Play Store due to being incompatible with the newer phone models. It remains available in the iOS App Store, as it was updated to become compatible with newer phones in 2017 in preparation for compatibility with iOS 11.
- The Beekeeper was a tower exclusive to the mobile version. It was unlocked similarly to the Monkey Sub in BTD 5 Mobile or the Dartling Gunner in BTD 6, needing a certain amount of Bloons popped in order to use the tower.
- Bus Route was an exclusive track inside the game.
- The player was able to unlock the premium upgrades by beating a certain amount of maps in hard mode.
Bloons TD 4 HD
Bloons Tower Defense 4 HD is the version of BTD4 that is made specifically for the Apple iPad, with a few upgrades that take advantage of the iPad's capabilities. It has many more maps than the PC version, and it lets the player unlock 3 Premium Upgrades for every 5 Gold Medals. It supports the Retina Display for the new iPad.
Bloons TD 4 Lite
Bloons TD 4 Lite is the free version of Bloons TD 4 (iOS). The player can only play the first track on it (Ocean Road) on Easy, Medium, and Hard. The player cannot play it on Apopalypse or Deflation mode. There is also a taster map pack which has 3 more tracks for £0.69/$0.99.
You can't get Premium Upgrades.
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“ Why was BTD4 pulled from the Play Store? Are you planning on putting it back?
Sadly, BTD4 just wasn't compatible with newer phones so we have no plans on bringing it back at this stage.
” ~ Sav and Tarn