so i figures this out about 0.75 years ago. but i only felt like telling it now
1.play alot to gain gems to buy a tremendous ammount if gold bags
2.exit to the menu and upload your game to i cloud
3.play endless and use all your gold and build your dream defense
4. exit to the menu and delte your curent save slot
5.download your game from i cloud
6. repeat steps 3-5 forever