For my game levels I shall have my main menu displayed like so from the images below of the basic layout with some animations in the background of the main menu.
For my main game area I will have it set as a basic layout with the tower in the middle and the enemies spawning in the left and right direction heading to the tower. The player will be in the centre having to shoot each of the enemies down to survive as many waves as possible.
Games Design Course - Harrison Preston 