Brilliantly done for a 3 day jam!
Definitely a visual step up from Attack on Alderia, I love the choice of color palette.
Colorblind mode is a godsend, but it would be much better if it remembered the setting as you move to the menu and back into a game.
Playing the match-4 often feels disconnected from the tower defence. Though obviously a lot more work ,it would be great to see the game switch between the two. eg. You get 20-30 seconds of match-4, and then use those resources to build towers and a wave comes in. Different towers cost different resources, so you can go into the match-4 searching for specific combos.