Good base for a game build. Mechanics with towers & building worked good. Make sure to read to get through the tutorial or you might get tripped up and not into the full game. 

Idea of night closing in unless the campfire is stoked is fun, and I can see the defending growing as you work on the game to make it more intricate. the expansion of the field of view is nice and can allow for a lot more creativity in the later rounds. more building, tons more mobs chaos could be fun!