Dang I almost missed replying to your comment! Yeah, that entire mechanic was loosely based on the portal series boxes where they will basically spawn where they started. This was also a thing that kind of surprised me when watching streamers play it is that they took a while to figure out how to get it out when you can only push it forward! I just played your game and am about to rate it. I like how you have to be active during the defense portion, unlike most tower defense games!