Well, the spyglass allows you to see if the chest has been taken. It’s up to the player to check consistently enough that they can see what’s going on on the other island. That’s now the second time someone’s encountered that bug… I’ll try and have that fixed by the next update. “Waves” come out at every 30 second interval, but the idea is that it’s intended to be a continuous attack. Literally next update or two I’m adding a slingshot for the player. That’s been a plan for a while now. And thank you for playing!! Im glad you liked the music, that took me a while to figure out. Finally, I’m aware how competitive this genre is and I’m hoping that I can differentiate my game from other TD games enough while still keeping it fun to really blow it up.