How do you make unlimited money without hacks on Bloon Tower Defence 4 and Expansion

First you need to have a MochiGames account. Then pick any track you want, can be easy, medium, or hard. Place any tower you want, finish round one. Save the game, and then go to sandbox mode. Pick the same track you picked, and click any bloon you want. End game, and resume your save. (you will see that your tower you placed will start shooting bloons). These bloons are from the previous round you saved. You will see that you got some money from that round without the round going to three. Keep on doing this until you have the money to buy a banana farm. (place all the farms as close as possible, this will let you place more farms in the map). Once you fill the track with the full uprated farms (you will get around 70k money per round). If this is on BTD4 Expansion, buy towers so the secret message comes. (get 200k money first this is recommended because you will need this money to re buy your farms). Now you got the secret tower, you would want to repeat the steps with the sandbox mode to get even more money. Once you get the money you feel will get you to buy all your towers, you can stop. (when your fully done with no towers but the banana farms you can get about 8,400,000 money in just one hour). You should find yourself with over one million money, when only on round 2, and the secret tower activated. Your next step is to sell all your banana farms and replace them with towers. (I would buy super monkeys and monkey apprentice). WARNING: do not save when selling back your farms, because if you make a mistake and do not like it you can load your other save with the farms back with all your money). This got me to round 140+. To reduce lag, just scroll down so you do not see the game its self, you will notice the game will run much faster and will save you time. You should not use this every time you play, try playing the game with out this method because it is much funner. Hope this works for you and have fun.