There was a lot of content in this game! I don't know how much was actually implemented and how much is placeholder for later features, but that was definitely super impressive, and as far as I can tell the periodic upgrades are real. I don't think I actually got into combat with a lot of ships, I just got a lot of upgrades because time was passing, so I think the balance could be tweaked to adjust the rate of how often you get into encounters. Maybe that's just because I picked easy, since I never played this kind of game before. But it is neat. I think movement could be slightly tighter - I know it's meant to be slightly slow so that it could be upgraded, though. Maybe looking at the World of Warship series might be good inspiration. Neat genre to pick!