Good idea, though:

1. The enemies should not start attacking instantly, give the player a few seconds, let them activate the first wave when they are ready.

2. The D20 looks like a D6.

3. You can buy stuff even if you can't afford it and go into negative shards.

Also the graphics of the game are very prototype-y but that is ok for a jam game.

It takes time at the beginning to place the elements. Otherwise the game has potential, we should try to explain the different towers and enemies. The difficulty is quite high 

cool concept, wish there was more progression!