Press the arrow at the top left to start a round press the arrow at the bottom right to see the shop, press the tower in the shop to buy it and press it again to place it. The switch at the top right is the auto start switch, if it's green the rounds will automatically start, otherwise you have to push the button every time. Watch the sell button though, when you sell one you sell all the towers you have on the screen (I'm still trying to fix this annoying bug).
Still not 100% done there is a lot of bugs and stuff I want to add so if you have any suggestions for future updates post them in the comments. ------------------------------------------------------------------------- I don't know why people put a bunch of links in their description but I'm not doing it. ------------------------------------------------------------------------- Thanks to Warfame, I watched his tutorials to see how to make the things rotate and shoot but the health and extra towers and extra enemy were made by me. ------------------------------------------------------------------------- Also thanks to ninjakiwi for Bloons TD 6 which gave me the inspiration. -------------------------------------------------------------------------