Base

One thing i found out that was a key part of the game genre of tower defense was that all the games have something you are defending, as it is what makes the game and the title of the genre, its usually a tower,in our game we are making a tower that is in the middle of the screen and enemies spawn from all sides and try to get to the middle without being killed, if the enemies get to the middle it will hurt the base and with this after so many attacks the base will die and the game will restart, i am also trying to make sure that the base can be upgraded upon, as my research shows this is used in a large variety of tower defense games.