At first it's a bit tricky to understand what's happening, but once you get the hang of it, the game is quite fun. When I was in battle mode I thought the enemies were coming at me and I was wondering how many waves I had to defeat until I realised I had to go to the right side where the enemy boss was waiting. Maybe a few more hints here and there on what to do would be nice and a description of what the units do (maybe I just didn´t see it though). But really good work in such a short time!