Brilliant game, I loved it! I really liked the core gameplay loop, and how the cards you got came more frequently and how strategies developed with new mechanics, it really made the game feel fun to progress. The stronger attacks at the end of each wave were also a fun addition; I liked the challenge it brought and it was useful to signal that the end of the wave was near as well. I'd love to see more added to the game in future, like more towers and enemies, new levels, new mechanics, there's a lot of really good potential here, so very well done!