Amazing game, but needs the following changes:
Fix being softlocked randomly if a projectile is not destroyed and goes off screen
Make sand better renewable - presently, wells are the only building you can build infinite of reliably (presumably you could use the projectiles making new dunes, but not for long). I think (1) if sand builds up in a building, cleaning it up should give sand, (2) destroying a projectile fully could make a new dune to harvest.
Make planned-but-not-started buildings disappear when the night starts or not have a hitbox, so you can't just spam walls that will never be built to defend, as for some reason they also block.
Ideally, you would also make it so clicking a specific building prioritizes it. Also my guys seemed to get stuck making infinite water my first playthrough for some reason (but not the second where I built tons of wells as defense)