Had this idea for some time. Finally had the time to piece together a working concept with free unity assets. Will keep working until the online level editor is working. Then add some story. And finally, upgrade the graphics and UI. In the meantime, there's a lot of balancing to do while adding the extra towers, skills, and monsters. I released this to get it out the door to move on to the next stage.
There's a nice little story about a princess trapped in a castle using a strange magical box to help her kingdom's army against the hordes. She's the "match 3" in the game, so to speak. But I'll get more into that later after the gameplay is settled.
Give it a play and let me know what you think. Tons of things to improve. Thanks!