Love the transition effects! Very authentic NES vibes to everything. The graphics are beautiful! I saw in a comment about the wizard selection menu and that was really cool.
Unfortunately I think my game broke at 1-3. My cursor just disappeared.
It would have been cool if the wizards had visual indication of their upgrade levels. Music would have also added a lot. And I was excited for my Ice wizards but they turned out to be quite weak and slow, so a lot of monsters got past them, so a little bit of a balance issue there. Level 2 I could get over 1000 gold easily with just 6 towers :)
I attempted a second run but had the same issue on 1-3 and couldn't continue.
Great framework for a authentic NES tower defense experience! Needs a bit of polish on balance and challenge and the bug for level 3 but great start with amazing visuals! Nice game :)