Steps:

1. Firstly place 3 dart monkeys at top right and bottom dimples. After few rounds upgrade them for piercing darts to pop green bloons. Then keep collecting cash for banana farm.

2. Try to buy Banana farms as early as possible to gain more money. Use minimum towers possible and invest in banana farms. It important to buy the 1st farm during 10th round to get +80 coins.

Try to fit 4 banana farms on top of the map and 1 under exit of left bloon. You can also fit 2 in the lower left circle.

3. Upgrade dart monkeys for range at this stage to hit fast moving yellow bloons.

4. Now get 3 boomerang monkeys. Place one in center of lower right circle, another at upper right circle and last one in one of the left circle.  With this, you should be able to reach 24th round.

After that,upgrade first farm and also buy 2nd farm during 19th round.

5. Then get a mortar with 2 upgrades before 24th round to pop camo bloon.These are camouflaged bloons which can only be popped by mortar or few other towers, not affordable at the moment. Set the mortar at the center for best results.

6. Now fill the empty circles of the map with 4th boomerang  monkey. You need these in round 25 to pop zebra bloons.

7. For 28th round, you require 3 cannons to pop lead bloons . Set cannons to  target strong to lead bloons. You can place cannons at upper right, lower right and upper left circles.

After 28th rounds , upgrade 2nd farm.

8. Keep upgrading boomerang monkeys for multi target, dart monkey for spike-o-pult with the cash you collect.  Also buy 2 extra mortars and target center areas without overlapping.  Upgrade them to rapid reload and set them target first intersection near entrance.

9. When you reach 35the round , purchase 3rd farm. Upgrade bommerang monkeys to glaive, mortars to bloon busters, cannons for bigger bombs , 3rd farm for more bananas and spike-o-pults to triple pults.

10. After 41th round, you need to buy 2 places and also upgrade with pineapple bombs. At this point, buy more farms and convert cannons to MOAB maulers before round 46.  MOAB contains 4 ceramic bloons and appears in 46th round.

11. As you advance and collect cash , upgrade farms to plantations, planes to rapid fire and get 2 more places. Set them in different direction covering more area. Upgrade mortars to mortar batteries. Then convert plantations to banana republics.

12. Now start buying more cannons for round 60. It comes with BFB which is a blimp containing 4 MOAB blimps. Set the cannons target to strong and place them around the circles. Keep upgrading farms when you got enough cash.

13. During round 60, purchase 2 beacons for lower right and upper right towers. Upgrade to jungle drums for extended range and fast shooting.

14. In between 60-70 levels, upgrade places to dart storms, glaive monkeys to lightsabre throwers. Buy more MOAB maulers. Keep upgrading and buying farms.

15. The hardest level would be 71. If you cross this level, you are the winner.