Incredibly impressive building mechanics given the time frame! The controls were hard to understand but the underlying systems were well made. Especially if it's geared towards mobile, having a corner of the screen to move all camera axes at once rather than clicking through the toolbar would make movement easier.
My main dilemma was that I didn't understand the gameplay. There needs to be a direct path to a flag to start a wave, but the enemies follow that path immediately so I wasn't sure how to progress. I tried placing some random blocks to throw them off to no avail.