Progress:  I'm working on getting the enemies to move along the path.  I can get the enemies on the map, but it's not worth an additional screenshot since I can't get them to move correctly...

yunhua98: Frogs are the first enemies you'll be facing...


 

Great news...

Enemies finally move along the path like the way I wanted them to.

Next on my list is getting the towers to fire at them.

Does the gray also flicker that much on calc?

I hope you can keep up the greyscale with the massive number of particles and projectiles that will end up on the screen.  Imo feel free to drop the greyscale if you feel it is preventing the game from getting enough speed, or if the speed is preventing the greyscale from looking smooth.  Furthermore, I mirror Bridge's suggestion to make the movement smooth, although I personally think a more pressing graphical change would be to make the path of the enemy more empty (perhaps completely white) so that the enemies are both easier to see, and easier to draw (no masking). 

How's this coming along?

yeah, you might want to adjust your settings in Wabbit. If you go to calculator/options/display, you can adjust how the grayscale shows up on the screen.

Is this still going?!?

Something pretty significant...

The frogs move pixel by pixel instead of by tile!

The project is not dead.  I have been lazy.  Anyway, I'm working on bullets right now.