Not sure if I was supposed to be able to put the towers on the path but it seemed to be the winning strategy. Got to give props to the audio here its exactly the kind of charming chaos that I thought would be present with the wildcard. I do think the UI could be cleaned up a bit to help present information to the player, mainly adding some sort of box around the tower selection and listing the cost of each tower to the player could help in the early stages.
Great work on this entry though, played quiet well and I enjoyed it.