What is an effective strategy to win in Bloons TD Battles?
Solution 1:
Start with a Ninja Monkey. Get more Ninjas but upgrade to 2/1 if you need to. Then wait to get a Bomb Tower and upgrade to 0/1 for grouped bloons and/or a 1/2 Sniper Monkey for camo leads. Save up money (don't send bloons), unless you have a little money left. I also recommend putting a Spike Factory at the end of the track, so it can build up spikes and when the bloons get too far the spikes will slow them down, slowly upgrade these.
Hope this helps a little!