Originally Posted by ghfhg
Your game is pretty good, I played several times and I kept getting killed around level 12, though I just realized you could build on grass too. With some polishing I think it can become popular.
Here's some advice: The first time I played I had no idea where the creeps were going to go. It would be good if that's obvious to a first time player from looking at the map. Get rid of the light blue "waypoint" tiles. Use something else to show where the creeps will pass, e.g. a red line (maybe with arrows to indicate direction). Get rid of the gridlines on the map, they make it too blocky.
Good luck with the game.