Would say piecing together 8x8 tiles to make larger art definitely fits the spirit of the limitation in my opinion. Back when 8x8 was a real hardware limitation creating larger art from small pieces to overcome that limitation was pretty common. Trying to overcome that limitation in this jam added a lot more time, work and challenge -I was actually pretty annoyed with the 8x8 limitation by the end of the jam lol
And about the presenting the tower abilities before hand: I agree but was running out of jam time (and room on the screen :S) I will try to think of a solution and update it.
Anyway, thank you for your kind words and suggestions!! :D