How to Beat Standard (Hard) on Sulfur Springs?
https://www.youtube.com/watch?v=4V3KRTZ4-es How to Master Standard Mode (Hard) on Sulfur Springs? - #BTD6 Strategy
Standard Mode
How to Beat Standard (Medium) on Sulfur Springs?
https://www.youtube.com/watch?v=HidTtjW3Ya0 How to Master Standard Mode (Medium) on Sulfur Springs? - #BTD6 Strategy
How to Beat Standard (Easy) on Sulfur Springs?
https://www.youtube.com/watch?v=yQ8owFZ9Sz8 How to Master Standard Mode (Easy) on Sulfur Springs? - #BTD6 Strategy
How to Beat Standard (Hard) on One Two Tree?
https://www.youtube.com/watch?v=lCOFKIETSmo&list=PLgINIdKjTvKuFPptzLlR0f-sBTcC7X5Gd&index=8&pp=gAQBiAQB BTD6 One Two Tree | Hard - Standard Strategy Guide
How to Beat Standard (Medium) on One Two Tree?
https://www.youtube.com/watch?v=9-rqkZRjLCk&list=PLgINIdKjTvKuFPptzLlR0f-sBTcC7X5Gd&index=12&pp=gAQBiAQB BTD6 One Two Tree | Medium - Standard Strategy Guide