Finished all levels so far, it is a really fun game. Impressed with all the different levels and units. I have high hopes for future content, and even just trying out new combinations looks like it could be fun for quite a while. Encountered no bugs. Something that is annoying is if you don't have enough speed to reach an enemy across the screen and lose because of it, but that's just the downside of losing cards / not having speed stats so I don't think that's "wrong".