Board Thread:Questions and Answers/@comment-174.106.150.22-20130822124040/@comment-71.177.237.8-20140620195505

In BTD5 iOS I have:

3/4 Sub Construction Yard, MAX Dart Training Facility, 3/4 Tack Research Center, MAX Boomerang Dojo, MAX Bombing Range, 3/4 Mage Spire, 1/4 Ice Tower, 1/4 Ninja Academy, MAX Spikes R Us, MAX Mortar Emplacement, 2/4 Pirate Cove, 1/4 Dartling Ammo Dump, 1/4 Rifle Range, 1/4 Heli Hanger, MAX Engineers Workshop, and MAX Al's Custom Chippers.

I mainly use the Bloonchipper specialty for co-op in order to get a temple at around Round 70-75. Most of my Daily Challenges involve a Heli Pilot, so I bought the building. Doing Daily Challenges or Random Challenges that allows Road Spikes but not Spike Factories makes the specialty buiding extremely useeful. I produces road spikes even without the tower on field!