This was cool, and I like the design. I did notice the enemies getting stuck as others mentioned, I got around that by building towers in those corners. I think it would be a good idea to adjust the prices of the towers. Having all the towers cost that blue crystal means that it's always the limiting factor in making more towers and this makes the rest of the materials effectively irrelevant. Nicely done!
Viewing post in Scrap Defense jam comments
The enemies no longer get stuck because of the level design and if they do get stuck, it's easier to free them. We have reworked the towers and have now also been able to balance them. There are 2 new towers and it shouldn't be that easy anymore ^-^
We've put a lot of work into it and worked on it a lot more. We would be happy if you would give the game another chance :D