I like this game quite a bit, even though I don't understand poker at all. One thing I could recommend it a variance of speed between each enemy type alongside with their health to make it so you don't just need a bunch of high powered towers to take out the wave. Another thing I might recommend is making the tower price and/or the enemy kill reward increase across waves in order to have a form of progression system to keep the game from getting repetitive.
All in all, this is a wonderful submission to the game jam that I feel anyone could pick up regardless of skill in either TDs or Poker!